My Minecraft Server Was DESTROYED By This Exploit - I Need Your HELP…

[@TheMisterEpic]

If you have any info, be sure to comment and let me know! My servers IP (1.8-1.19): og-network.net Server discord: discord.gg/G7zq6NPZnM

[@Stender_]

Damn bro

[@2fingersandathumb]

Yesss a new epic video ❤️❤️❤️🫶🏻

[@terminatevader]

I'd love to join your Minecraft server but I am currently boycotting Minecraft

[@thewintersgem7341]

could there be a problem with the hardware used to store it?

[@thewintersgem7341]

there could be a corrupt driver

[@coderxgamer]

this is a weird bug, there are a few potential ways this could happen i think, first of all im almost 100% sure that this has to do with a plugin u are running on the server because i have looked at vanilla code alot and have never found something like this in the latest version, one theory is that the data structure storing the chunks in game (a hashmap i think) was being accessed and modified on 2 different threads, this might happen if arrows are processed on a different thread on the server rather than using the main thread tick system (probably to prevent lag), hashmaps are not meant to be modified and accessed simultaneously and can do weird things such as mix up stuff in the map or create errors which could explain the crashes, i dont really know if something like this can happen in 1.13+ but i would ask the plugin devs about it

[@TheMisterEpic]

We think it's to do with the plugin fartherviewdistance

[@bigbadcuff]

fartherviewdistance plugin would make sense tbh

[@dumb5308]

potentially yeah, very strange behaviour but that could explain it

[@PotatoObliteratorGD]

@M e r l i n 💞👇 what are you on

[@Strylez_Senpai]

this sounds like a reasonable explanation, however, I am wondering @TheMisterEpic , did a restart fix the corrupted chunks? Because if it did, I personally think that it has to do with a logic of something that just loads and processes some data (but it does not store them in any file). If that is the case, I personally think that the problem is in something that is running as a 3rd-party software. If I am not mistaken, minecraft stores literally everything in some sort of a file to ensure that no data are lost. Maybe some enhancement plugin or clearlag ?

[@DrZaiusDrZaius-xp5fw]

Chunk errors like the ones in this video would happen to me all the time back in the day- my internet was so bad that joining/exploring servers would leave parts of the map unplayable unless I relogged (more often than not it wouldn’t even fix). Stuff like this only ever happened on my end though, and obviously didn’t affect other players. Strange happenings

[@gamefreak2016]

That actually makes a bit of sense if someone purposefully lagged their internet to fire hundreds of arrows on a server that all “appeared” at once, it may cause the chunks to glitch out on the server end due to the arrows

[@DieNow]

@@gamefreak2016 nope. Would cause tps lag aswell and player rendering seems fine from video footage

[@apolloandwarrior_3229]

Yeah, same thing here. But the entire chunk was gone and I could see ore in adjacent chunks though. But I was bedrock.

[@therevenantschakalofkrieg2495]

Even from prior experience this is completely unique... this does make me worry though. If this bug is ever replicated by anyone. Honest servers could be in grave danger. It could be possible to replicate the bug in the Stoneworks hub, and basically have the entire RP Community on its knees. If anyone specific currently on kylorne managed to figure it out first... then it could prove disastrous, since I know folk on it that can use it for nefarious means to get their way. So it is a race against time to figure this out. It is ever replicated successfully... I pray this gets to the right hands before it can be used to potentially bring Minecraft itself to its knees... It it important we hurry. We cannot let others figure it out before many of us so time is of the essence. We must hurry

[@Iktsoi2]

The same thing happened to me for years until I got a better wifi because my old one was over a decade old. It would take 10-20 minutes until the chunks went back to normal.

[@wiji1]

It seems like maybe an issue with whatever spigot fork or plugins you’re using. It looks like the sheer amount of projectiles in the chunks are causing some sort of chunk saving error on the server side. The “duplication” effect could be caused by the server repeatedly attempting to reload the chunk into its last saved state before the error. This would explain the arrows repeatedly falling and the fireworks teleporting back. My assumption is that the individual clients are causing most of the visual issues, as it would undoubtably have a hard time loading in corrupted chunks. My guess is that your spigot fork or plugins are using certain types of chunk/entity optimization that are causing this. I would try replicating this on standard Spigot/Paper and without any plugins that could possibly be causing this.

[@loganhendrickson1349]

i can believe this

[@luhgarlicbread]

meaning take the world files and put them on vanilla spigot/paper

[@dep_mex1493]

The fact the chunk errors change size from different perspective feels like a render issue, kind of like how the game doesnt render the whole world but only its visible parts. Maybe a server plugin related to how chunks load could be the cause (kinda like render distance)

[@imjustaseahawk3087]

he actually said on another comment that he thinks it could be with theire fartherview plugin

[@vitulus_]

1. The item / arrow thing isn't anything. It's just what happens next to unloaded chunks: the entities freeze. Has happened for the last 5 or so years of Minecraft updates. 2. You need way more debug info. Check the region file in MCEdit/Amulet or equivalent, although for latest versions, best bet is likely just an NBT editor. Check if the chunk is unloaded; and if not, what it's chunk status is. If it was a saving issue, it would show up in logs, so it's likely not that. There just isn't enough information in this video to determine anything.

[@MrCaptainTea]

Agreed completely

[@ocso6394]

You could try having a plugin that automatically deletes arrows that've been idle for a very long time without being despawned, or you could have a dev make a plugin that deletes arrows with insane velocities

[@siamcheese]

But arrows with insane velocities wasn’t the case they confirmed that

[@ocso6394]

@@siamcheese My bad

[@NoName-SEC-B]

@@ocso6394 it's still good for anti-mods

[@slinkie423]

I think a problem with the arrow deleting plugin would/could be that _technically_ the arrows aren't "idle", because they're bugging out and constantly moving...

[@xtrinity0680]

I really hope your server gets better. I can’t imagine how panicked the staff and players was

[@enderwarrior3590]

It just needs some aspirin

[@Random_ass_guy_on_the_internet]

Did a bot just write a real comment? Damn

[@ge0graphaly]

@@Random_ass_guy_on_the_internet it was prob stolen from another comment

[@keinwunder9776]

were*

[@Random_ass_guy_on_the_internet]

@@ge0graphaly probably

[@MonkeyIncorporation]

Have you tried looking at the raw chunk data of the invisible chunks? Maybe there is something corrupt within those chunks and is causing the whole chunk to not load. At best, just remove any data of that chunk as if it has never existed so anything the could have gone wrong in that chunk would be deleted

[@MaxGuides]

Probably not corrupt just over the size limit, yet because of how it is done the chunk is still able to be saved…just can’t be loaded on a vanilla client…might load fine on other clients though as the server is still trying to serve these problematic chunks to people.

[@theirongiants]

It might be

[@himynamesbob2268]

@@MaxGuides people were using lunar which has optifine on it so optifine/lunar can’t load it, it also seems more like a clientside thing, as I have experienced smth like this before in my server, when trying to play 1.19 on 1.8 and going under bedrock level, server would say smths there but client can’t render/acknowledge it’s existence, so might be corrupted but it’d probably have to be a plugin or maybe geyser failure

[@nighteule]

@@himynamesbob2268 I wonder if anyone was using Sodium then to confirm this

[@doggoincorporated3686]

Greetings fellow corporation

[@miningman1]

This sometimes happens in Hypixel UHC where there is what we call a “bugged chunk” or “chunk error.” It can get u glitched out of the game if u go near or into it and all items turn into infinite ghost items. This is a very mysterious bug and no one really knows how it works. The only thing that sometimes works is to place blocks on the corner of the chunk. This sometimes reverts it to normal.

[@en_xz0oo]

This happened to a Lifesteal smp I play on. It took about 1-2 weeks for the mods to fix it, the reason might be because someone is lagging the server, hacking, or a glitch somehow where they can clear chunks or smthing like creative mode

[@Top-Code]

This is at least partly clientside, as chunks behind the bugged ones are being culled. Which means the client can still tell that something is in the chunk. Best bet would be to scrape the data directly from Minecraft when it happens and investigate what is in the chunk.

[@zerokun2655]

Yes but that's just rendering, i noticed the culling too, but that's almost expected, the issue is server side and it then causes the culling, fix the root of the problem and you'll fix the culling

[@benjaminwilson7632]

From what I've seen is that Minecraft tries not to have a random chunk load after all the chunks around it so in the event it does happen, it culls the chunks behind it as the chunk catches up. Usually this happens at the edge of your render distance but can cause weird behavior if it happens close. Due to the chunk being bugged, it might not be possible to get the data for the chunk as it probably isn't saving in this bugged state

[@npcmaster3304]

it seems like somebody figured out an overpowered exploit with the connecting to 2 servers glitch thing. although i could be wrong, it seems plausible considering that this could be possible with a separate server like with the broken chunks. its possible that the chunks from that server maybe transferred over while the chunks in your server were also saving, therefore corrupting the chunks that were trying to be saved. it would also explain the duplicate items, and possibly the arrows as the arrows from the other server might of been transferred as well causing the server to think that there in your server, when they're really not. im not a mc expert, so i could be completely wrong with all of this. correct me if im wrong. but to be completely honest, i would of done the same thing that the other guy did and not reveal what he did because trust me, i wouldnt want this op exploit to be shown off n then patched the next update, even if i was given a reward for a unban. this vs an unban, yeah pfff id rather be banned xd

[@pugthug2016]

you seem very smart I will just trust u

[@mug3453]

sounds reasonable

[@MrBeard.]

idk how would u get chunks from other server without using world edit? The server to server dupe is only for items not for chunks or blocks. Plus a mod or admin could have done this, not a player if they weren’t using hacks. Idk if im right but u have a good theory.

[@Decommissioned]

Yeah no, that’s not it, you can’t just transfer region files over from server to server like that.

[@jad_c]

usually the sky flashes with that bug

[@fr_rave]

Having such a big and somewhat weirdly programmed as Minecraft makes room for exploiting every single aspect of it, even the more obscure ones, creating this situations.

[@MrFunny01]

I think the issue here is plugin done from a random newbie in coding. Probably saving world in the async combined with arrow velocity glitch causes save error or load error, but it didn’t even gets to reporting this error. Also things happened on the spawn because most of the plugins work there. That needs to have debugger attached to the server, because client can lie.

[@zenreeio13lIIll]

Oh well, the exploit is becoming mainstream now. We might as well come clean so the original founders can get credit at least.

[@91veltra]

That sounds terrible, I hope your server can recover from this exploits.

[@SMASHER9898]

It did I played yesterday

[@Arvl.]

Honestly would want to see it myself, looks pretty cool other than the server collapsing before your eyes

[@dashinking]

dude wrote a comment within the first minute of the video to get likes 💀

[@theirongiants]

My server experienced the same and we ended up deleting it from frustration. This bug happens randomly.

[@Creeperking-bw7wi]

@@theirongiants What plugins was your server running?

[@HyperCodec]

I did this on accident once in my friend's smp breaking a ton of stuff with treecapitator Edit: elytra bug also happened to me on a separate server during a huge amount of block updates (flooding machine). I reported it to mojang but they werent able to replicate it. The elytra bug I experienced continued to spawn firework particles and even worked after landing. I have footage of the elytra one, not the chunk though

[@senecvinitor2694]

Greetings, Epic. I have encountered similar problems, not on server, but on with my sp experimental 1.16.5 modpack (which is pretty much a Better Minecraft fork). I experienced what you describe as chunk freezing, but instead of falling in infinite loop player would seemingly infinitely fall into void (without taking any damage). Another notable difference is that ghost items were present, but not looped. Finding such chunks usually meant that this particular world is doomed, because after restarting, returning to corrupted chunks would duplicate the problem. Troubleshooting such a big pile of mods is tricky, especially as I am an amateur programmer. I still don't know what exactly is causing it, but programmer friends help me inspect it from time to time. I was thinking it might have something to do with terrain generation, as not only spawn chunks could be corrupted in such way. As your server looks modded, you might also inspect modded entities. I am pretty sure this info won't help, but hope it does). Wish ya luck.

[@eideticex]

Need to get a debugger up on it and look for the velocity, acceleration, and position of those objects in memory. Don't trust the game for those, they are obviously compromised within the game's context but a debugger carries it's own context. What I suspect is going on is that somewhere there is a buried async chain doing some wild things, maybe they don't even understand how to use it and were just mucking about with one. Obviously some of the game's threads are still operating normally for the game to work despite the massive glitch bombs going off. Even barring that some part that is affecting the threaded portions of Minecraft but not it's primary rendering thread, proof of that is that you can get frames at all to the screen. Looking at the different threads with a Java debugger should be very interesting.

[@zerokun2655]

Could be a problem of the server optimizer, bukkit/spigot etc.. but then why hasn't it been found before? Is it just on newer versions? They may be running into race conditions while accessing the world and cause problems from 2 different threads(like they split the load to optimize but caused a glitch)

[@MrRazamataz]

That's just a load of nonsense technical jargin lmao. For one, most of Minecraft runs on the main thread. Sure there is some part of chunk loading that happens on other threads but not the whole process.

[@anjoismysign]

​@@MrRazamataz This is not true. There are bukkit/spigot/paper forks who "attempted" to do stuff async. What I was going to ask was their server software since they should be running either Paper or Purpur. Any fork that's sold and promises async stuff is just a scam and was made skidding other projects.

[@MrRazamataz]

@@anjoismysign Paper and plus forks have made *some* things async, which I hinted at in my orginal reply. My point it main chunk loading isnt aynsc as of yet so that saying that chunks load on a different thread is false.

[@luhgarlicbread]

@@MrRazamataz I’m confused, could you clarify for me? From what I can tell you said that some of the chunk loading on happens on different thread but then kind of contradicted yourself. Thanks edit: oh wait that wasn’t you 💀

[@megaman6710]

In my singleplayer world, back when I didn't have the best computer. I would occasionally see hundreds upon hundreds of pigs spawn, or hundreds upon hundreds of cows one time. A technical friend of mine stated it was a RAM issue, and I believe it causes entities to sometimes be cloned. I can provide photo proof if needed. I believe that there was some arrows in/near spawn, and a RAM issue is causing the server to duplicate and duplicate and duplicate the arrows until the server is overrun. It explains why a server reset fixes it. I do not know how your server is run, but if the server can be moved to another physical server, that might fix it. Either the server has insufficient RAM, or there is a damaged RAM stick.

[@DieNow]

The server is most likley hosted by a provider which would find the damaged ram stick fairly quickly. Also not enough ram would probs be caught by admins before making a video

[@aren5031]

Wow. A few years ago I saw something almost the same on my server. It was still the days of 1.7. I can't tell what it was, but just like it started suddenly, so did it end. My theory was that there was some strange "loop" in the engine and updating the engine helped.

[@erikhaag4250]

when you program a computer to run async tasks or communicate with other computers, you have to worry about not only your code working, but all the cases of tasks running ahead of each other, data failing to be sent or received correctly, and a myriad of other problems. The fact that MMOs exist is incredible to me

[@Ibuildstuff832]

I have never had the chunk problem, but I did have an item duplication problem on my server. The only way I could fix it though was by temporarily modifying a lot of my server’s data so it could handle more and thus let me into the lagged chunks to fix the problem. If the problem hasn’t been found out yet by the time that I join the server, I’ll take a look at it personally and find some stuff out maybe. We’ll see.

[@LettuceJuice]

I’ve seen entire worlds disappear like these chunks before. One server I played on had a hub server that supported a ton of different versions and mod packs, but if you connected to it using optifine none of the world would load and you wouldn’t be able to see any entities.

[@commander3494]

Optifine is such a flawless mod mhm lol /s

[@JessiBear]

Entity behavior is exactly like you see in the phantom nether. To get to the phantom nether you need to enter the nether from the End. I suspect you have a player who has figured out how to glitch themselves into a phantom state, rendering them invisible and corrupting any entities they interact with.

[@ItIsJan]

that phantom nether was sadly fixed somewhen around 1.16 or 1.17, the last time i got it working was 1.15

[@caspermadlener4191]

But why did it happen? Maybe that will lead somewhere

[@ManosSef]

1.13 fixed the phantom nether

[@dfirebug922]

perhaps the plugin that allows for players to join on older versions is responsible, he said the server runs on 1.19, but it is available in 1.8.

[@nyxia_4128]

How did you enter phantom nether again?

[@TNT_Blox_0]

Maybe you should make a test server with the same map, plugins and software and see if it has the same issue. If it does try disabling all the plugins. If the issue stops then start re-enabling plugins to see which one is causing the error. If the issue persists with all plugins disabled create a new world. If that fixes the glitch then it's probably an error with your server's map. If that doesn't fix it then try a different server software.

[@NichtDu]

Would take way to long

[@siuanswan447]

@@NichtDu that's why you enable a chunk of plugins at a time to whittle it down to a group of 10 rather than enabling 50+ plugins individually.

[@NichtDu]

@@siuanswan447 still he had the bug twice a month. until we would come near to a fix that would be 4 months

[@Handstandbanana]

Kinda reminds me of stripelands lol

[@sirgrem2988]

This is the most broken things I've seen from Minecraft.. I didn't even know it was possible for Minecraft to get this absolutely broken, considering how rare bugs are.

[@midlifehemi88]

I've actually encountered this a lot on singleplayer worlds of all things. I play a lot of modded minecraft, as I enjoy mods like Create and other things, and every now and again I'll encounter this bug where some chunks just.. don't load. I've never really played around with them too much, but it's pretty random. Once I even generated a world fresh and had this happen to the chunks directly in front of me the second I loaded the world, except it was a gigantic circle of about 25 chunks. There doesn't seem to be any errors in the logs for this, and it never affects TPS, but if you go inside them, everything becomes invisible until you leave, even the chunks you came from. Also, chunks behind the broken ones disappear visually as well. For example, if the chunk in front of you is the broken one, the chunks behind it (the ones that you can't see without looking through the broken chunk) appear invisible, until you move so that you can see them directly. It's like the broken chunk is a visual barrier. And yes, you do get rubberbanding and sometimes get stuck when you enter the broken chunks. As for what causes this... well, I don't know. I've never figured it out. But I can say that the way I've always fixed it is just by reloading the world. Simply exiting out the main menu and reloading the world makes the chunk problems go away. I guess this isn't *that* helpful, but I do find it interesting that it happens in singleplayer too, not just servers. Also, I should clarify that while I do run with mods typically, they are not the cause. I rarely play vanilla, but in versions 1.18 and newer it happens semi-often in singleplayer, and I've had it happen once or twice in vanilla singleplayer in 1.18 once as well. Odd bug, but I'm no closer to an answer than you, other than I know that reloading the world fixes it reliably.

[@catman392]

Definitely worth trying to recreate the exploit in different environments. If you're using Paper, try Purpur or Pufferfish. Try disabling certain suspect plugins (in another comment, I heard you were suspicious about fartherviewdistance). And as another comment suggested, try looking at the raw chunk data and see if anything weird is going on. You could also read the entity data for individual chunks too, if it ends up being something with the glitched entities rather than chunk data. As a server administrator myself, I am definitely curious about the exploit, and look forward to hearing if you figure out what's going on, and if there is a solution. Cheers!

[@BuildTimeMC]

the same thing happened on my server, some chunks were not loading like your server, and everything else like commands and tps was normal

[@disabledmallis]

People say in the comments that it might be caused by 2 different threads accessing the chunk. No, its not that. And this is because: 1. Java detects dataraces like this and will throw an exception if it occurs 2. If its a plugin, the bukkit api will throw the exception as well When an exception is thrown, you will see it in the server console. If you ask me whats happening, my best guess is that there is some kind of ownership softlock here. Maybe a plugin tried to access the chunk, use it for something, and never told java "hey im done using this chunk". Thus, the server has to just wait for it. To me, this would explain why the tps is fine (bc the server does the waiting asynchronously) and why entities are just repeating their motion into the chunk as well. The state of the entities is likely reset when the server tries to put them into the chunk its waiting for, but its not there so it puts the entity right back where it was.

[@DieNow]

Ye i do agree with this. He said somewhere he uses fartherviewdistance and both of them accessing the data may cause issues. I have not looked in the source of the plugin but it may affect it in other ways too

[@Zuriki09]

You can get race conditions in Java, it has some deadlock protection, but it's not impossible to cause a race or deadlock scenario.

[@DieNow]

I belive this is the case after reading about the mod

[@BowDown097]

heyyy cuttieee

[@smartin_b5314]

I actually believe that the exploiter was onto something, loading and unloading the chunk sounds like it could create a deadlock, where the loading thread takes ownership of the Savedata while the unload thread takes ownership of the chunk. On the other hand a poorly ported plugin might not support the newer multithreaded chunk loading

[@jgcodes2020]

The chunks turning invisible and the changes depending on angle suggest that this exploit messed with how Minecraft performs _culling_. Basically, most 3D games won't render things that are definitely off-camera. Somehow, this glitch confuses that algorithm, causing it to cull visible chunks.

[@notgood1321]

"I was just expirimenting" Also the bidoof guy: *has 100's of arrows shot by him*

[@bunnybear1010]

Amazing video, a very well done documentation on all of the events that took place on your server, I wasn’t there to experience them, but it sure does seem interesting! Good luck on getting to 500k!

[@intuition_plays3824]

I've seen something like this before, using an nbt editor to create a shulker and filling it with extra slot item. It created this strange effect where chunks when unloaded created a permanent unloaded chunk that would make fun KS next to it disappear note that no entities were affected and I cannot know if it was just client side as it was single player

[@lonach4761]

Purely gut feeling, but it's as if the server was using a speedhack set to a lower than normal speed, or stopping time entirely (probably due to plugin as you said). This would explain why things keep reappearing in the position they were dropped/shot from, in an infinite loop (for the client the items/arrows keep going, but not for the server, and so after a while their position is reset). No clue what could cause this though, and also no clue what caused the chunks to glitch so bad, but im also writing this right after watching the video with no research whatsoever.

[@Mini-ti5yt]

Chunks: disappear People with bad internet: first time?

[@snowmaster7206]

one of my friends saw the exact same bug in my friend's single player.However, he saw creepers being spawned and teleported to seemingly random areas and multiple different ghost blocks being placed around him before his game crashed.After loading it again,everything was normal until a few hours later the exact same thing happened again.This time, his game wad so laggy that it instantly kicked him from his game.This glitch happened on 1.18.1 on java by the way.

[@vedasheinfeld3563]

Sounds like herobrine lol

[@dhyanvohera]

You can do is remove one plugin and narrow it down to what may be causing it And since your server is both Java and bedrock there is a possibility that two of the versions have some exploits and get together and cause this to happen. I remember there used to be an exploit in bedrock edition to get infinite arrows blocks armour etc.

[@mettaursp309]

The symptoms kind of remind me of NaN poisoning of some kind. I can't guarantee this is it, but it might be worth looking into. You have a physics based exploit where a physics object corrupts the objects it interacts with. This in tern spreads to the area of a whole chunk making things not render or render improperly, breaks physics interactions, and anything that enters it or gets close breaks it. Why does this sound like NaN poisoning? Well, the way it works is that when an invalid math operation is performed or corrupted memory is accessed you can get a number that is less of a number and more of an error code. The way computers most often perform math with numbers that have decimal points is they use a number format called floating point. Floating point comes with a set of values that are reserved for invalid numbers called NaN, short for "not a number". These are fine on their own, but what happens when you try to perform math with NaN and a regular number? Well, it's an undefined result so the resulting number is NaN. This means that NaN can propagate through a system infecting more values in memory if it is allowed to spread in more math operations unchecked. So how do these symptoms relate to NaN poisoning? Well, when you get a NaN with a graphics pipeline when you are rendering something, the object will vanish like it isn't being rendered at all. This is because none of the polygons that make up the object will be computed at positions within the screen, so none of them get rasterized, or drawn. When a physics object would interact with another often times you want some sort of feedback to propagate between the two physics objects. If NaN is involved in one of the objects, it paves the way for the NaN to spread from the object that contains the NaN to the object being interacted with. This results in both objects being corrupted. So why is it that only specific chunks are being affected by this if it can spread? Well, when you're making a physics engine and a rendering engine, you don't want to have to check every object all the time, right? That would be slow to compute. Games usually work around this with spatial partitioning, splitting up the game map into different regional bins that contain objects. Game objects should only interact with other objects in the same bin, or in neighboring, intersecting bins. The NaN could be corrupting the spatial partition of that specific chunk so only objects within it are affected. No collision pairs would be tested outside the chunk unless it is an object near or approaching the chunk, like the part where getting near one was rubber banding you. This could also affect projectiles that are flying towards the chunks that are affected from a longer range because they would need to check those chunks from farther away due to how much distance they cover. So then what about the projectile duping, rocket duping, and the item duping? Well, this could be a mixture of different effects: on the server side the item entities could be getting corrupted, but something about the state doesn't get replicated to the client properly, so there ends up being some desync between the server and the client. The client could see the server talking about some ghost item so it creates something to represent it while also not knowing what to do with the original, so the original gets rubber banded. From the server's view the item may already be in NaN land, while the client doesn't know what to do, but thinks the item is still valid. The client never sees a state where the item has become NaN corrupted so it still attempts to render it. However when it is your own character that tries to enter the chunk the client is performing a lot of extra computations so that the game is as responsive as possible for you. The client has physics ownership over your player, and the server corrects it through rubber banding. Because the client has more responsibility over your character, your client is able to force you to interact with the NaN directly even if the server might filter that out and not say you did, so you succumb to the effects of it, partially. This could result in the NaN being propagated to other clients resulting in the disappearance of your character on their end. The weird part here though is that it doesn't affect you locally, it just looks like you're rubber banding. It could be something like the character using different replication code because of how the client ownership works, so the NaN doesn't propagate to you still, but it does propagate to other people. It's hard to think of why else this could happen under a NaN poisoning scenario because normally when I've seen it happen it inevitably corrupts the player and/or character resulting in the character disappearing, or the whole scene disappearing from that perspective.

[@OmegaCat9999]

There are multiple ways this bug can probably happen. 1. The chunk(s)' data (either as an array or as a hashmap) is being edited across 2 threads. Although I don't know much about this, I'll guess that these arrays/hashmaps shouldn't be edited across 2 seperate threads, as it'll mess stuff up. 2. Multiple players loaded and unloaded the chunk in rapid succession faster than once per 20s. This is only a guess, but since a tick is .05s, going any faster overloads that chunk, as too many players are loading/unloading that chunk. The game probably won't be able to handle it, so this happens.

[@nintendoswitchbrit4201]

It might be a good idea to set a command block to kill all arrow entity's at spawn to prevent this from happening again at least for now

[@Dolphin002]

Despite the server not being laggy, all of these things happen on laggy servers. It's almost as if someone made a lag machine that only affects those chunks.

[@BloomSirenixx]

I will quote an friend of my on the discord "I might know what caused the server bug talked about in an video of yours I think it has to do with overloading a chunk(there exploits that cause that(one I know is called chunk banning)) and seeing the entity behavior it's likely to do with entities as there known lag makers"

[@moonhunt18]

I've heard of ghost blocks before, maybe the unloaded/vanished chunks turn into ghost chunks where all blocks in the chunk(s) are ghost blocks. It'd explain how you can fall through the world.

[@kwaler1850]

I recently first joined the server and I was confused why there were missing chunks but I didn’t pay attention much because I thought it was just me but I guess not

[@FishyLookinLemon]

My guess is that the server is getting overloaded with info of the mass amount of arrows. If I was you and I can try stuff to fix it I would implement a system that after a certain amount of time of an entity being loaded it would be forced killed/deleted. If it was the high velocity, a velocity cap should help. I don’t know anything about this but just felt like sharing my ideas

[@ScorpioneOrzion]

I think just kill after X minutes should be fine.

[@realPurpleOrb]

It really does seem like it's the velocity that is the root of this problem, though you'd need to do a lot to get the exploit to work.

[@spruce-studios]

@TheMisterEpic Check the server console for any chunks that couldn't save. You'll want to install a plugin or set up command blocks to make sure only players and items can enter the spawn area -- all other entities they should get killed instantly. (/kill @e[type=!player,type=!item])

[@AAlgeria]

EssentialsX Changes (most) Commands, so im not sure if that would work. but i havent tested it so i cant confirm

[@Megaheropap]

This happens when chunks are being loaded to the point of lag. When chunks are loaded for example loading them too fast, it causes the chunks to load slowly and overloading the chunk to the point where it doesn't load because other chunks are being loaded. The arrows and blocks falling and turning to ghost blocks aren't causing lag and is only a result of the unloaded chunk. If you increase your render to max and decrease the max fps and fly far in singleplayer, you will see the chunks having a hard time to load. Throw items and shoot the bow and the items and arrows ill glitch as shown in the video as a result to the unloaded chunks.

[@olehkasian588]

Looks like chunks with entity glitches are considered "lazy", and will stop entity processing, which means entities can't despawn / move etc. This could happen if there is a chunk in 5x5 area that is not loaded, probably that's your invisible chunks. I can only imagine it happening if there is something messing up with chunk loading, maybe some plugin

[@randommeogamer]

From what I've heard from both this video and the comments section, it sounds like there is a light suppressor that is causing this. I don't know too much about them myself, but I do know that they only really generate lag client side and where you're near them, but they affect the entire dimension. Hope this helps in some way.

[@ItIsJan]

that could actually be it, but 1.) Light suppressing has been fixed in 1.19 2.) Lieght suppressing prevents the server from loading NEW chunks, whilst the chunks at spawn are constantly loaded

[@randommeogamer]

@@ItIsJan Well with the chunks constantly being loaded by other players, due to plugins. Also even though it has been patched now some of the plugins could be interfering. At the end of the day it's probably an issue with plugins, although I don't know which.

[@arc419.5]

The EXACT same thing happened on my server. I don't know what caused it, but everything that was stated to have happened on your server happened on mine- with one exception. On my server's end, water would also cause you to fall through the world in non-broken chunks, and the fireworks/elytra boost didn't happen. I am using fartherviewdistance, ViaVersion, GoldenEnchants, God tools, java/bedrock crossplay, and 1.8 PvP for plugins. I suspect it was fartherviewdistance, though I am not sure. I killed all entities and restarted the server and it was fine for a few days- then it started up again. I'm fairly sure it was a plugin and not an intentional destruction/griefing/player caused event, because my server's pretty small. I didn't get any error message.

[@xMystL]

I'm pretty sure it was the java/bedrock crossplay plugin. That would make more sense honestly, because java and bedrock are rendered/loaded differently.

[@joetheman74]

It's EXACTLY THE SAME except where it's DIFFERENT.

[@erismc]

Pretty sure it's fartherviewdistance

[@erismc]

@@xMystL Geyser (the only one widely known) does NOT cause this, I'd know and so would the entirety of Minehut.

[@ghostcatcher1279]

I wish I had seen this sooner, while I don't know what happened I've seen this happen on multiple servers. This used to be a issue I'd find on the Shotbow network along with other smaller servers. On top of that this happens frequently on modded servers where there is no speed protection and you generate chunks too quickly. That partially aligns with what the person who claimed it initially said. Sometimes this also happens on single player when the game can't load a specific chunk. This leads to you being able to walk around everyone but the chunk. But as soon as you walk into the chunk you fall until you get teleported back up as if there's a block you're supposed to be standing on. From a programmers perspective my only thought is if a chunk gets overloaded, unloaded, and loaded relatively quickly the chunk can't load properly and is stuck in a sort of in between state where you can't see it but technically it's there.

[@ryanharrington5066]

I've seen something like this in old versions of the game, the chunks would just never load. If it keeps on happening to the same chunks you got a problem, if not you also got a problem, but a slightly less problematic one

[@ZuluGamingSeries]

All bro had to do was clear entity’s lol

[@delofj]

In the past there where a glitch that caused chunk to not save if there were to many data in it, that could be a variant It’s possible that there is a thing in one chunk, causing the server to not want to load the chunk and messing up the chunks loading and what happens around When this problem occurs, I advise you to see what was in the messed up chunks

[@tenkoalaking5696]

i think what happened was the spawn area was used to sitting on the computer's ram and when there was a server reset- yeah some of it got deleted

[@neopolis01]

I have had something very similar happen on a server I played on. We did quite a lot of testing and deduced we had somehow managed to get into lazy (non-entity processing) chunks, which explained the weird items and arrows. It would also explain the missing chunks as they weren’t loaded at all. We could use a portal chunk loader to entity load an area, as entities going through portals load a 3x3 chunk area around them. We could find the edge of the area where this occurred, and it was removed when the server restarted. I have extensive screenshots and a video of the event which may be useful to you. We were running a fabric server with carpet mod, some optimisation mods and a few plugins

[@criticalhippo5927]

Have you checked the random tick speed while the server was bugging? The fact that you could fly for ever makes me think that the rts was slowed. When the rts is slowed you keep you momentum with elytra while arrows and firework dont work. The day counter would also go up very slow. Someone could slow the rts by having a lot of entities (mobs would work best) at 1 place with a chunk loader. Idk exactly if this works on multiplayer especially with so much plugins so it could also be a error in one of the plugins

[@xlarch]

Game developer here. I have seen things like this happen in my own games some times, I'm not sure about why exactly it could be happening here, But things like this usually happen in multiplayer games when the client and server replication gets out of wack and they disagree on the game state, but as for this, well its pretty strange.

[@boahana]

I've seen this on mineplex before, everyone got kicked and the server was closed. After 2 weeks they re-opened the server again and it seemed like it was fixed, yet there was a small chance chunks would break, it would be for 1 player. No one talks about it anymore, as it is all forgotten. There is a rare chance you still experience this on the mineplex server, if you'd like to see for yourself.

[@michew5451]

The Duper Trooper isn’t a duping expert, he just shows us the new dupes and how to perform them. He even admitted that he’s like a news reporter in one of his previous streams.

[@rsv9999]

personally, a while ago, during the 1.16 snapshots, I encountered a bug almost identical to the firework one you saw, when giving a firework flight duration 127 (or something stupid) and incasing it in a box, the firework kills your fps and then gray screens the game. i believe this happened to something with velocity values not being clamped (which means that a value has a minimum and maximum number, like -10, 10 would make -15 become -10 and 2000 become 10) which means every tick tons more velocity calculations were being done, I really think you should poke at a replayrecording, hell even open it in a hex editor to find nbt which should have string names, or doing /data get entity or smth

[@blobthekat]

Here's what I could gather: - Dropping items work (packet processing) - Entities don't move (no entity tick) - Some chunks are forever stuck server-side (loaded but not sent to client; chunk load tick) Conclusion: Since some aspects of the game work fine as if it were TPS 20 and others as if it were TPS 0, It seems evident that every tick only partially runs, e.g an uncaught error in the middle of a tick. Now, I'm not claiming this as the answer, but it seems HIGHLY LIKELY that someone is running an *update suppression* machine, which causes a StackOverflow error (a type of error that's similar to an out of memory error except more short-term fatal), in turn causing the whole current tick to be abandoned. Update suppressors or similar tactics that mess with game ticks could cause whole sections of your world to completely stop ticking (which is what you're seeing). Other than update suppression, there could be something else causing an error that wasn't properly handled, causing the whole current tick to be abandoned, but the most likely answer here is update suppression. From this explanation, it's possible to explain more or less every issue your are seeing: - Without ticking, entities don't update their position, making them frozen in thin air - Note: Your client has its own separate tick cycle that is unaffected by server tick cycle, meaning some entities could appear to fall normally, until the server sends the client their position, which happens every 20 ticks (1 second), giving the appearance of items and arrows falling endlessly - Without ticking, chunks cannot be sent to the client, explaining these mysterious missing chunks - Since player entities are not ticked, firework boost never gets updated and therefore lasts forever - Chunks that disappear and reappear when looking around are completely unrelated to the server, and are a result of occlusion culling, a mechanism that attempts to not render chunks out of your sight to increase performance (which is by no means flawless) - Fireworks crashing the game? I have no clue, probably some unoptimized client-side code, definitely not related to server Unfortunately for you, update suppression is often used for duping and other really overpowered things like instant item transportation

[@fl02k10]

seems like these chunks were permanently stuck in their phase of loading/unloading. All the arrows and items are behaving just as they should in non entity processing chunks (although sus that there are so many arrows); this area generally looks to me like the edge of someones render distance and the server was just stuck on them for some reason and refusing to update. Maybe the shape of these unloaded and lazy chunks next to them chould give insight why it was occurring is that specific area. Maybe it is a plugin for loading the spawnchunks correctly or that the server has to account for bedrock compatible chunk loading, it could also be a plugin fighting with the server to unload the spawnchunks. Really weird bug you have found there, hope you can find the culprit!

[@watermelonseed947]

If you guys need help with the crashing problems, you can use a fabric mod called Not Enough Crashes

[@nlk294]

It seems to be a simple chunk overload. There are so many entities in the chunk that it can't be properly processed by the game. Think of it like a lag machine on steroids.

[@danielpalecek4090]

this is a common exploit I used to crash servers with 100-3000 players like vanillazone, trenend, DarkMC. the only defense I know is having a command block that doesn't allow you to build the launcher by limiting amount of redstone parts in 1 chunk, and also limit ices and ender pearls so the render based launcher doesn't work too. some plugins could also cause this. idk who caused it with this video but if I see it in-game I can locate the launcher or the plugin.

[@bennyl9228]

I have successfully recreated the glitch while exploring the far lands in 1.15.2 using the far lands mod. I came across huge areas of chunks that behave exactly like the ones on your server. To do this yourself, using the far lands mod, teleport to 30000000, 255, 30000000 and fly around. You should eventually encounter those chunks. In the neighboring chunks, entities (except for the player) will always loop back to however they were before.

[@RealQuarlie]

I mean, kinda karma... a month ago you released a video explaining a bug that could break many servers, and now you get your server broken in return

[@TimeWisely]

Considering you have a lot of plugins, consider making sure your plugins aren't glitching it. For example, a region guard plugin, like WorldGuard, it's possible this is caused by a plugin, if this is your hub server, perhaps consider replacing the hub with a simpler version, less blocks, and see if the issues persist, sure it's an ugly downgrade, but considering your server has nothing but custom plugins, it's highly likely 99% of people simply don't have a clue what is wrong, considering we're not your IT team. Speaking of which, why don't you have an IT team? You're a commercial server, you make money from it, you should have staff who can fix stuff like this. Also, I just thought of this, but, did you check your server's console? was it spitting out a whole bunch of errors? for example maybe you hit a memory limit, or maybe you're simply running a weak machine. Final thing to check, is probably not minecraft forums, check the plugins' forums, check spigot forums, you said you're running plugins, so you're 100% not using mojang server software, so consider taking this query to whoever is responsible for the actual server jars and plugins, because in my perspective, you did barely any research. All you did was search the minecraft forums from what you said.

[@speedrunnertom151]

I have a couple ideas, First, the storage of your server is like sence of a twitter user, GONE Second, your plugins could be corrupted Third, when you update your server version, it doesn’t always go smoothly Final, the entities could have been in one place and after updating your server your spawn somehow went to those coordinates and the entities scattered around spawn

[@MrShourin]

I recently performed a world download of the spawn area to see if I could find anything hidden under spawn that could be causing this. Downloading is the only way I know of that spawn can be completely ripped apart and looked at chunk by chunk you can find things you can miss in spectator mode. Chunks show as being there but vanish as soon as it's loaded in single player as if they are corrupted on the server to begin with. This could explain why players fall thru them and die on the server because a normal chunk glitch only traps a player. They would not fall to their death and is fixed on a world / chunk reload. unless there is something I'm missing.

[@lilulzsecl398]

funfact: this happen in 6b6torg too! if you go to -30m world boarder you will see some arrows flying around and some ender pearl floating around. and a single chunk missing and it wont load unless if you break some blocks inside the bugged chunk. (IT HAS SIMILARITYS SO YEAH )

[@RetjeeeTv]

This kinda reminds me of old alpha/beta servers running out of memory, or having a corrupt chunk. Speaking of; I had a similar thing on my minecraft survival world a few years ago when I was playing on a windows XP/Vista(dont remember), chunks where corrupting left right and center, disappearing without question, arrows and pearls not working as expected etc. etc. It got so bad at one point that even textures where corrupting in a spiderverse kind of way, it was pretty cool so I posted it on reddit, though I think that only happens with worlds/servers that are on a very low end device, or even too big of worlds for a server to handle. Although, this happened to me on a singleplayer world, everything was fine on servers...

[@Number_072]

Desperate times require desperate solutions: kill all the entities every now and then at spawn until a solid explanation comes through

[@l9m241]

Yeah the firework thing is definitely a game crasher for sure. They are a strange entity when they fly, they gain momentum exponentially you can see if it if you spawn a firework with a minecart on top and ride the minecart. You go FLYING but after about the 10th boost the game crashes since you are moving billions of blocks in a tick and the game can't handle that.

[@TestAccount666]

Maybe try something like Spark and analyze the heapdump and other stuff. It might tell you a little bit. Are you using Spigot or some Fork? If it's a fork, is it paper, or some different weird fork? It could also be caused by a plugin. The server itself still seems to know about the chunks, otherwise you wouldn't rubber band. The client doesn't know about the chunks, because you keep falling through them. What I'd do for now: I'd delete any arrows everytime one is being shot. Just calculate where it lands and do stuff. If this bug is caused, this is a temporary workaround until someone fixes it correctly. If it still happens, you know it's not the arrows ^^

[@BobzBlue]

With no experience all I can guess is a fundamental bug, maybe even hardware.

[@connorlyons2376]

Imagine being scubacroc AND puttin1518 at the same time. Imagine grieving squid ward zoey

[@-_lIl_-]

it could be something to do with a plugin or some entity glitch, but it is most likely more server-sided, and my best theory is that it could be to do with the bedrock and java compatibility plugin that allows both bedrock and java players to play on the same server, as the way that the arrows and items were glitching could be because of some error in the reading and translation process between java and bedrock.

[@ItsWazzaP]

The same issue exists on TownySMP at spawn areas, but it doesn't have those arrows and items glitch and it doesn't affect all players. Same happened on a server of mine and I had to completely delete the spawn map and then run the server so the new spawn would load, then I would just use the original spawn map that was downloaded from planet minecraft and it would be fixed.

[@motheriacastle3117]

Hey! I accidentally did the same thing on my friends server by trying to ‘book ban’ I got a shit ton of books with random characters and threw them into an area then used a duplication glitch. It broke the chunks completely due to the information stored. So maybe check that avenue out too

[@leafblower098]

I am not sure but it may a problem or bad code (malware) in the plugins(s) that are on the server. So maybe uninstall some plugins and check them for faulty code that may be the cause of this bug/hack and re add them. It could also be a problem or once again malware on the servers you are running the server on. I haven't ever seen this in vanilla Minecraft or on any other servers. You could also every time this bug happens take note of the players and restart the server, if it happens again check the player list and restart. Do this process until you notice that there is a player that is always there when the bug occurs it could be that player. Not guarantied though. Hope this gets fixed or never happens again. :)

[@treal.]

I remember something similar like this on Mineplex a few months ago. Just the getting stuck in the chunk though. While I was waiting for a game to start (where you can pick your team and boost the game) there would be empty chunks like in the video. If you walked into them you would get stuck and not be able to get out unless the game started or you left and rejoined the server.

[@blueforce4030]

This phenomenon is in the game at least since 1.8 if not since the beginning. It probably happened when a chunk was loaded under extreme load. This never happened to me on a vanilla server.

[@Iamrealme]

I’ve had the arrow thing happen in my single-player world and had to use /kill to get rid of it. I believe it happens when you log out when the arrow almost falls, then it starts to fly all around. I’m not sure this is the cause, but you should definitely try it

[@Spikeyboii]

Okay Idk About the chunks disappearing BUT- i have seen arrows getting stuck like that over and over again. One time i was playing on my friends server, we were just in the cave and then we saw a skeleton. The skeleton tried to shoot the arrow to us. But it keeps geting stuck again and again. Their entity behaviour is weird too, including the mobs, there was a creeper in taht chunk and then it was about to explode, but it got stucked on that exploding position. We left the chunk with no issues.

[@FyingfoxGaming]

While I may have never seen an exploit like that before but I can at least point out that the way how chunks aren't visible (or just not loaded but is also called "chunk error") and the reason for that is most likely lag, I have since played some Minecraft Servers or Minecraft Worlds made by people on my Friends lists or even Realms and sometimes on a Single player world (but offline) while I did had a trashy internet/WIFI back then and usually it does happen the same thing to me when I try to walk on a chunk that's not loaded and it also did get my character stuck and also have trouble looking around and whatever, and that also includes sometimes falling off the world. While in rare occasions I may have seen items dropping down over & over again, can't remember where or when have I seen that happen but somehow my brain already knew that it's possible. I most likely seen that happen on Minecraft Bedrock, Minecraft Xbox One Edition and even on Minecraft Pocket Edition. So is that normal? Well I would say it's commonly normal for a server lag or anyone who has slow internet/WIFI (But not possible for anyone else with good internet to see what is happening when a player has slow internet) that are able to see a chunk error like that but I guess not normal in a way how it's most likely used in an exploit.

[@mrdollyman5675]

Just started out on OG:SMP and I really enjoyed it! Great server, nice community! The combat takes some getting used to (from a bedrock player perspective) but I still enjoyed! Gonna hop on regularly, most likely!

[@PiercingSight]

I would definitely take a backup of the chunk data while they're corrupted and take a look at what the data looks like.

[@theepicblock1169]

To me, this looks like it has all of the properties of a chunk not being properly sent to the client. You mention that you start rubberbanding when you enter one of these chunks. This means that the client is unaware of the blocks in the chunk, but the server is aware. Therefore, it can't have anything to do with the loading of the chunks, because otherwise the server wouldn't know the collisions inside. Thus it must be a packet issue. I believe that I have heard of these kinds of bugs before, you could try the paper bug tracker. (Source: I've spent a long time modding the Minecraft packet code)

[@DaMooster]

If you want to just get rid of those arrows perminantly, you can have a command that kills arrows that last longer than 1 minute or within a certain barrier of velocity

[@fusionslasher815]

Maybe you guys have some sort of plug-in that messes with the Block Registry of the server? I’m not sure of this, but if you have an unknown block id inside a chunk, it will cause it to completely die out. The client senses an unknown id and stops the entire rendering process, which leads to the client believing the chunk to be empty, and letting the player fall. The server, however still recognizes the chunk and tells the player that they cannot fall, thus teleporting them back up. It’s all just a theory of mine, and I don’t know too much about what happened in this case. However if it was indeed a block id issue, it would mean that restarting the server might somehow get rid of the unknown id.

[@fusionslasher815]

Also the a chunk with a broken id will also crash the entire server if a ticking entity enters it(e.g. tnt) so that would probably be a good way to test for it. But I’m not sure if this is a common thing among broken chunks.

[@Foxy_Hydra]

The only thing I can think of is to possibly ask the nerds Inc minecraft comunity they will probibly figure it out. Can be very difficult to get ahold of them though

[@alephcake]

remember the sign dupe? basically you overloaded a chunk with megabytes worth of sign text. i think this is happening here, but with arrow entities and ludicrous values of velocity, just causing the chunk to not load because of data limits

[@dani.2479]

>be me >watch this video >3:01 man i fucking love when a youtuber makes a video about a game breaking exploit and needs to fulfill that 10 subs a minute or else their heart will stop.

[@mask_vids9834]

it could also be a result of the server failing to load the chunks as a result of an unidentified item like a default spawn block, a moving item... its possible it didn't become a problem until players started attempting to interact with it.

[@itsmehere1]

My first idea would be to check with that other server the guy showed the bug working on and see what similar plug-ins you both are running, if there is a bunch of plug-ins you are both running then you can for sure know that it's a plug-in error, but if the plug-ins are not similar at all then I think you can rule out the plug-ins being the issue, my best guess is that I very much could be something to do with the Java and bedrock playing togeather plug-ins since I've seen that kind of chunk errors on bedrock a LOT but never on Java.