TF2 Bug Busters: Sniper Bugs

[@SquibGourmand]

To celebrate this newest episode, I will be recreating Jarate in real life. Then i’ll drink it to test for authenticity!

[@SquimJim]

You all saw the comment, folks! Don't let him get out of it now!

[@somerandomguyintheinternet]

Dear god.

[@cactisiusninja]

Mon Dieu!

[@Wigion]

@@somerandomguyintheinternet theres more

[@BinkusTheThird]

@@Wigion NO!

[@chefpyroisin]

Wait a minute... This isn't hit movie Bug Buster released in 1998...

[@bigfatgoons]

im a frayed knot

[@invisiblechrisgamer8465]

How could he

[@Misuune]

I miss having the "stab stab stab" duels with people, seeing who dies to RNG or spams their taunt key the longest. Two snipers stuck in a stun pose, yapping non-stop "stab stab stab" for like 30 seconds then one of them dying is peak Team Fortress 2 gameplay.

[@admiraltonydawning3847]

Nah, peak is forming figures with chains of snipers yapping "stabe-stabe-stabe".

[@fujiwaranonekobiodrando1257]

I'm sad when they fixed it

[@posthistoricdino422]

that's called a staring contest

[@LinksYTLink]

The Bug where the Jarate on the Cozy Camper became invisible at certain angles USED to be entirely true, but Valve fixed that one fairly recently.

[@Orthane]

I'm so sad you didn't mention the "stab stab stab" spam from two Huntsman snipers spamming G. Neither of them will ever be able to finish their taunt so they'll both just sit stunned saying "stab stab stab" over and over again until one of them stops spamming G

[@SquimJim]

I tried that and it wasn't working! I doubt that part of it was ever fixed but for me one always just got the kill

[@dirksdead671]

It became patched a while ago, now it’s just bait someone to stun you first and you win

[@crippledwings]

@@SquimJim if you move the camera it will move where the stab is being aimed (like heavy pow haha straight up or down) so to win those kinds of fights just leg go of the joystick and hope the enemy sniper doesnt know moving the camera for a funny screenshot angle will be his downfall

[@Iciclefairy]

@@dirksdead671 when was it patched?

[@MrLocurito]

@@SquimJim i tested this when the taunt pop up menu was new, if you have no taunts equiped the pop up menu for taunts don't show up, allowing to do the stab stab stab bug.

[@Randoo_ALT]

8:08 sniper really just opened the gates to the underworld by ending 16 clones of him

[@reagansido5823]

So wait, if the Machina can trigger a penetration kill from shooting through your own teammate, and shooting through multiple enemy's can cause the unique sound effect to stack multiple times, then does that mean you could headshot 16 enemies through 15 teammates and trigger the sound effect even MORE?

[@SquimJim]

Thats a good question! I'm going to have to try that out.

[@joeyjonquantaviusjr9927]

Max trollege

[@evangonzalez7732]

@@SquimJim You won't need to make a video on it, when you try I'm pretty sure it's gonna be so loud we'll all be able to hear it wherever we are.

[@LazyBuddyBan]

rip earphones

[@SuperCaitball]

No, it doesn't work that way. The sound effect only triggers on kills occurring after a pierce, not on individual pierces. If anything piercing any number of teammates just means you get +1 sound instance, as the first player killed would now be a penetration kill where it wouldn't have been before.

[@monsieurm3989]

16:50 shonic tested something similar to who gets the kill first based on different weapons types. I think for hitscan like the sniper rifle it was always the player who joined the server first

[@someguywholikespotatoesowo7000]

Now we wait for the six hour long documentary “Bug Busters : Mann vs Machine”

[@FishyButters]

To answer your question at around 17:00 about why one player kept getting the kill, I believe shounic made a video analyzing this phenomenon. It has something to do with priorities of who joined first and it affects other aspects like teleporters too

[@Seanderson3]

I love how the Machina's multi-kill fanfare sound becomes the sound of a nuclear warhead exploding once it hits 16 kills

[@wildhunter939]

Honestly if you get 16 people in one shot you deserve to have it sound like a Super Bowl stadium is cheering you on

[@braindamagegood]

yes

[@purplehaze2358]

If the huntsman can still attack while stunned, doesn’t that mean it’s a soft counter for the old sandman?

[@scarymonsters524]

No but you can actually do literally any taunt while stunned, including special taunts that move you forward automatically, like the Conga. In other words, you can escape a tauntkill / the old cleaver combo by congaing away.

[@rordongamsay8478]

New objective in life, escape a Skewer by congaing

[@ErevanDB]

Bright, you finally made sense.

[@dr.bright2437]

idk me maybe it is

[@scraub8913]

@@scarymonsters524 p2w omg

[@shaveme2991]

For the first achievement bug discussing shooting someone at the exact same time (~16:20), a youtuber named "Shounic" actually made a video discussing this topic. In general, he has many videos about how tf2 works in its calculations and whatnot. I'd recommend both that video and his channel in general. Extremely interesting. I'll see if I can find the link to video, but I'm kinda lazy so no promises. Found it. Video is named, "What happens if two people kill someone or each other simultaneously? (in tf2)" by Shounic The link is m.kzbin.info/www/bejne/b3_InKF3qauefMk

[@maywolf9443]

I was looking for this comment thank you

[@That_Guy977]

also, i have gotten that achievement with both me and the other sniper using sniper rifles before, and we did both die, just a testament to that being possible in practice

[@chadspamton2159]

I was literally just about to say this

[@dkskcjfjswwwwwws413]

sigsev made videos on the jarate physics

[@Lerre]

@@That_Guy977 you wouldn't go on the internet and lie would you?

[@JIJI_o7]

For the didgeridrongo taunt it's possible the flame particle is under the floor. It seems to appear a fair distance from the hand in other taunts and maybe sniper sitting on the ground with his arm pointed a little downward it could end up lower than floor level.

[@xray8012]

The reason why the Sentry Buster's legs are the only visible part that gets Jarate'd is because its actually a Caber Demo with a seperate Bomb model

[@bobbyferg9173]

My favorite part about the Machina is when you sometimes hear the incredibly loud and repeated multi kill noise in the middle of a game. I hope that bug stays around forever (unlike the Wheatley Sapper voice line spam bug that is unfortunately now gone)

[@tygerpyro500]

How’d this man comment 13 hours ago, the videos been out for 1 minute 😂

[@certifiedgigachad8419]

I have the same question y'know

[@ClonedGamer001]

@@tygerpyro500 Channel members get videos early

[@trashmann480]

@@tygerpyro500 time travel duh

[@TwunnyPhaiv]

man I'm so glad that exploit got fixed, that shit made me want to kill myself

[@staceyurick1467]

The only guess i have for the bug at 12:15 is that the game checks to see if you are holding the self aware beauty mark when its thrown, and if you swap to something different the game thinks “oh he doesnt have the beauty mark so make it throw the jarate model”

[@warmongerous]

The huntsman arrow extinguishing upon entering water definitely used to be true, I used to see it all the time way back in the day, around 2011 or so. It didn't affect the arrow igniting people, but it looked like it was a normal arrow. The other bug that I remember definitely existing a long time ago was the bugle being held up one from the soldier video; he used to keep the bugle held to his mouth in first person until you let it go, and not put back to his side

[@doxxek]

If you land a headshot with the Sydney Sleeper while kritz charged or during humiliation, it will register as a headshot and even show it as a headshot in the killfeed. I wonder if that would let it contribute to the "Flight Canceled" achievement.

[@imlegos2153]

Additional note; Being stunned also resets your action. So you can huntsman taunt dual for effectively an eternity just saying 'stab stab stab' over and over.

[@cryojack1337]

i know another bug with the classic: while charging and scoped, if you inspect your rifle [ Default: "f" ] the laser moves around as if the sniper rifle is being inspected

[@Johnden]

On the subject of how the game decides a tie breaker, shounic made a great video about how the game handles assists. I think for kills the game picks the player that joined the server first.

[@UseroneGaming]

Honestly I love this one at 8:00 It’s like the better you do, the harder they cheer. With no limit 😅

[@SuperCaitball]

14:41 This is actually a bug involving incorrect Z-buffering. The Jarate isn't invisible, it's just that the game is incorrectly drawing the sniper rifle on top of it. How a game determines what order to draw 3D objects in is known as a Z buffer. The "Z" in this case referring to the pixel's perceived distance from the camera, with the X and Y being the horizontal and vertical dimensions of the camera. Translucent textures are notorious for having Z-buffer issues in many rendering engines, as the renderer needs to render everything beyond said texture before it, which can be a nightmare to decipher. The loadout preview renders objects in a different way from the rest of the game: it's gotta have a transparent background to place it on a UI panel, it needs to be lit in a completely different way, and it can't show up in the gameworld you're potentially currently in, or be affected by effects and lighting in it. Thus, the game may be confused as to what is actually behind the translucent Jarate texture.

[@l_ukers]

A KZbin named shounic made a video asking the exact question of what happens when two players fire at the same time, it goes in depth into the code and is really well made

[@renquital3276]

I remember how half a year ago, when I just started playing TF2, I got dead reckoning achievement while playing with a sniper rifle. I didn't even know that huntsman existed. I don't remember exactly how it happened, but I'm sure this bug is possible

[@Orthane]

I just realized that the bread inside the jars for Sniper and Scout have miserable lives. Sniper pisses on you and Scout uhhh.... pours spoiled milk on you? Yeah.... let's just go with that.

[@therealevilmudbug]

Yeah... because it's "Milk."

[@cheddartaco]

according to lore it's radioactive cow milk, but much like uno rules, just because it's official doesn't make it universally agreed upon

[@Dr._Heinz_Doofenshmirtz]

the one at 14:15 also applies to botkiller flamethowers (at least from what I've personally seen) the head moves around very slowly another bug with botkiller flamethrowers is that the flame is missing on the weapon model

[@lorddootinator4332]

16:45 the way tf2 determines who got the shot is by the order of who joined when, damage and points, lag compensation and ping, as well as the server itself. Basically not even valve can tell you who shot first.

[@Jayy0360]

Seriously I can't understand why you aren't at least 10x more popular. your content has always been very high quality and entertaining I really wish you the best with gaining the fame you deserve

[@privatechan23]

5:25 I feel like the real bug should be "sydney sleeper shots can sometimes decide not to extinguish burning teammates for no reason whatsoever"

[@tonyf3431]

that one may be because your teammates aren't lag-compensated, so you have to shoot where the server thinks they are and not where your screen says they are.

[@BlazingShadowSword]

I remember the huntsman arrow being extinguished from water a long time ago, it was also only visual. So maybe that was fixed so that the arrow was always lit? Or my memory is going.

[@ieuanakbar3753]

10:42 I noticed that If you start charging with the classic then taunt and continue charging once you stop taunting the rifles laser will stay in place and you can walk around without it, after firing a shot the laser will return to the gun

[@goofyahdemoman1134]

4:32 Wow, a free unusual effect!

[@casikle]

great video as always, I love learning about all these little quirks in the game and can’t wait for the pyro and engineer videos, the map bugs idea sounds great too and I would love to see it

[@joanaguayoplanell4912]

Weird sniper/spy bug I encountered. The headshot kill icon and the counter on the scoreboard is dependent on the shot dealing critical damage, not just on hitting the head. This means 2 things: - A Vaccinator or Battalion's Backup charge will make it appear as a normal kill regardless of circumstances. - If you receive a crit boost you can make them count the shot as a headshot even if under normal circumstances the weapon shouldn't have been able to headshot (this includes being too far in range for the Ambassador, not fully charged Classic shot, any sidney sleeper shot, unscoped shots from all non-classic rifles). Minicrit boosts won't work for this, you need a full crit. That's also why the Sidney Sleeper never displays the icon despite it being able to headshot since Blue Moon. This also means that a hypothetical sniper rifle that minicrits when it would normally crit would also be affected by this error. I haven't been able to test if strange versions of those weapons have their headshot kill parts affected by this as well. Fun trivia about this bug. The TF2 Wikia has blacklisted this bug, for some unknown reason, and regularly deletes any references to it despite it being clearly a bug.

[@sirscribbs5993]

The Sydney Sleeper in MvM has always had bugs with it, it used to have recursive explosive headshot that would be able to deal infinite damage. Which Sigsegv also has a video demonstrating.

[@SharkBeret]

8:02 ok but honestly if you collateral 6 players in a single shot you deserve to hear that sound

[@angel89775]

At 15:17, where it mentions world view, it most likely is talking about using true view models, otherwise known as world view models, which is a command that makes your game render your weapons and (annoyingly) unusual effects on your own screen, which means you get some wacky images and sometimes annoying stuff happening like unusual effects blocking your screen.

[@SquimJim]

Just tried that out but it looks the same. When using cl_first_person_uses_world_model 1 it is technically using the 3rd person models that other players normally see so it shouldn't make a difference. But I did check to make sure!

[@angel89775]

@@SquimJim Alright, I wasn't trying to say that you didnt do it wrong, i was more mentioning that you didnt attempt something that i had thought of, thanks for checking though.

[@SquimJim]

​@@angel89775 Oh no worries! It was worth checking out just to make sure.

[@Subject_Keter]

All i know is, there used to be a bug where Huntsman Arrows would get stuck in friendly buildings and on destruction, fly out and destory anyone. I did 30k to a Hale once and to watch him instantly melt was worth it.

[@Subject_Keter]

Also there a feature in MVM where a Robot not moving after a bit will be killed since it isnt "working properly" and made killing the MVM bosses fun.

[@stevens.286]

Really?

[@Subject_Keter]

@@stevens.286 Yep, if you need a visual showing of it, go look at how Minecraft arrows react to Sand dropping. And now imagine the Arrows can go like 3 feet out and still do full crit dmg

[@ishxxl]

14:24 it is protecting itself from straining itself by moving slowly, its shielding the danger

[@alextheumbreon1363]

8:00 I love how they get louder for the first and second one, but then on the third, you just open the gates to hell.

[@lu7ky]

So for the machina double tracer, that works mostly on maps like balloon race etc where the object you are on is moving quickly

[@darthvaderbutwayshittier7054]

Time to rush to the wiki to fix all of them.

[@Tangus]

4:48 I actually put this bug on the wiki! I can confirm that the infinite loop by holding M1 and M2 has something to do with if holding holding down the mouse is registered as multiple concurrent clicks or just one.

[@salmuttotabreabittlecochicarac]

The jarate assist one reminds me of if you are doing the gunslinger contract and get an assist with the other player using their main weapon, it counts toward kill with primary, even if it was a sentry assist.

[@michaell33t14]

The Last Wave can be earned by taunting with SMG. Btw, You can unlock The Last Wave and Be Polite at the same time by taunting any special taunts, for example, The Schadenfreude. And Shoot The Breeze unlocks if you shoot dead ringer spy with SMG.

[@tk337h]

10:17 i don't think valve knows either

[@therealspamton.g.spamton1997]

3:06 "Wait a minute, if we're underwater, how can-"

[@moronribbons5774]

4:12 so THATS why crit flares do almost full 90 damage to demos with shields, I figure.

[@lucashill7612]

SquimJim be like: MYTH: The Razorback is awful. "Well..."**copy-pastes the razorback video** MYTH CONFIRMED

[@Orthane]

I've just starting getting back into TF2 again and I'm a Sniper main, so perfect timing.

[@Nightmare_52]

What does the machina fanfare sound like if you kill the 99 other people in a 100 person server

[@moronribbons5774]

13:07 It's possible this one might've referred to (and only worked with) a full razorback, if it drops a full sized gib when it's wearer dies and it hasn't been broken. Did that ever get tested too?

[@SnowOwlStrike]

I think what they meant with the Cleaner's Carbine one is when you use the worldview model as your first person pov

[@gamergary4093]

I’ve noticed a bug not listed is when you taunt when holding m1 with the classic, the laser disconnects from the rifle, and stays until shot or swapping weapons

[@reagansido5823]

0:43 "Lets get ready to bumble." oh god the cheese.

[@FireKomodow]

16:33 can confirm you can die and kill the enemy when both useing the default sniper rifle

[@GuyFromCanada]

Straight up did not know you could activate the focus meter at any time for the heatmaker. 1,500 hours, and I did not know that.

[@DestroyedClone2]

4:34 For the lit arrow with the taunt, maybe for the digeridoo the position of the bow is underneath the player? It can probably be tested on a platform with space below it. 15:20 For the "world view", there's a console command that replace's the player's first person viewmodel with the world's (cl_first_person_uses_world_model 1), so maybe that's what it meant. Is the result the same?

[@crimsonkahn4689]

Are you going to put the dispenser A-pose bug in the engineer video(pick up a melee as any class while standing inside a dispenser)

[@tronitt]

2:15 If you hit the "Exit match" button while in the menu, you can actually move and shoot. I'm sure that with some modded hud, you could just shoot from the menu. Edit: you can't move, but you can still shoot for some reason.

[@JustPeaYShooty]

14:25 I'm sure that happens with all the jigglebones in the Loadout menu, at least it also occurs with the Botkillers

[@grummdoesstuff2983]

surprised the bug about sniper stretching out that one mushroom hat with his melee taunt wasn't mentioned anywhere.

[@ocsanik502]

Can't wait for engineer bugs, There will be no shortage there. Here's a few that may or may not be on the wiki: If an enemy engineer places a teleporter exit against their spawn door and you survive being tefragged (either have over 1k hp, phlogistonator mmph taunt, or ubercharge) then you can both walk towards the spawn door together. Thin spawn door brushes can have teleporters placed through them. Severe server desync can let engineers place teleporters through cealings and in some cases walls.

[@cadenbarrett9903]

19:03 yeah.. pyro is buggy but engineer oh boy, engineer has so many map related bugs, like being able to get an enemy spy into his teams spawn on a few maps, on badwater he can build a teleporter out of bounds, etc. heck for the past few scream fortresses most of the bug fixing the devs did after released was to prevent engineers from glitching out of bounds

[@disposable_income_andy]

sound based bugs like the machina one arent due to the rifle itself, but the fact the same sound is playing at the exact same time in more than once instance. usually, it's fucking hilarious, deafens everyone on the map and drowns out all other noise for a sec.

[@AlkoholOgerLeonElektronik67]

16:26 it is true with cheats/bots from what I've seen, insta-killing each other rarely at the exact same moment. Not sure if it's human viable though.

[@salty1355]

15:29 maybe they meant when you're using cl_first_person_uses_world_model

[@gracenantaya8394]

Man, videos of this quality deserve more success

[@TheAzorg]

Snipers killing each other at the same time - there is a video explaining this. If I recall correctly, some weapons (bullet based?) Hit target first if the player shooting them connected to the server first and other (explosion based??) Do it the other way, meaning if you connected last you will be rewarded with a kill. I don't remember this correctly but it went something like that.

[@tylercoon1791]

Wait a minute....this isn’t my favorite 1998 comedy/horror film staring Randy Quaid!

[@solgerWhyIsThereAnAtItLooksBad]

I dont think that the Sydney Sleeper having no headshots in its stats is a bug, since iirc the game doesnt count it as one, just as a normal minicrit

[@hatandhoodie_]

Fun Fact: If you set cl_first_person_uses_world_model to 1, basically using thirdperson models in firstperson, The Classic's laser misaligns way more often, and way more noticeably. I know this, because I use The Classic often, and I play with cl_first_person_uses_world_model set to 1.

[@froyo4u]

I believe the cleaner's carbine bug about the misaligned muzzle flash was referring to using first person world view (cl_first_person_uses_world_model 1) and not literally looking at it as another player. I have not checked, but just something to note

[@Critical_Hit]

Wow, that Hitman Heatmaker’s feature was unknown to me the whole time. I waited until the bar was full every time I had it equipped

[@BeengoVEVO]

Bug: Headshotting 16 people at once with the machine clogs the gates of hell since so many people are dying at once that you can hear the screams of the damned

[@skeptic_lemon]

Shounic has actually posted like 2 or 3 videos just detailing what happens when you kill each other with hitscan weapons at the exact same time, and it varies a lot. It often favours the first person to join the server and for almost all cases it's consistent in which player dies.

[@stevens.286]

Pyro can also do 372 damage with a reflected arrow, see Blu's reflection montage video. The Pyro can also headshot people with reflected arrows.

[@TheZett]

372 damage arrow headshots are caused by someone holding a pain train. The Huntsman has a hidden -25% damage trait, which is why its headshots do 360 instead of 450 damage. Combine these properties and you end up with 372 damage: 450 damage + 10% = 495 damage. 495 - 25% ≈ 372 damage (rounded).

[@moronribbons5774]

6:47 this would also explain why EH damage seems to ignore resistances enemy bots have (most notably FoS heavies taking 150 as expected from it)

[@acrail]

The single employee Valve hired to update TF2 closely analyzing this vid rn

[@MuichirouTokito416]

8:08 R.I.P my ears and my earphones aswell

[@drucy.]

The first one also works with the Meat Grinder kill taunt (Gunslinger default taunt). You reverse taunt-kill the engi if you're fast enough.

[@sirreginaldfishingtonxvii6149]

17:10 It's an emu! It's a ute! No, it's _Jarate Man!_

[@metalclawsteelheart]

Now do the machina stack with 100 players.

[@Jupiterbun-bunJetson]

In mvm the Razorback + full crit resistance would cause a sniper being backstabbed to gain a bunch of overheal. This was patched (at least out of two cities, haven’t checked other missions) but apparently works on a server with sv_cheats enabled.

[@Eye_Of_Odin978]

At 16:50 "I don't really know what determines that, so it might be an interesting topic for a future video." Shounic actually made a video on this, but it was focused on two Soldiers firing a rocket at the exact same target at the same time. I'm pretty sure this is related to that same programming quirk, though. It seems that hitreg in TF2 for instances like this seem to favor a certain player based on what order they entered the server. The favored player's shot always lands and the unfavored player's always misses. You should check out Shounic's video to learn more though as I'm not an expert on this kinda thing.

[@pepelagarto8110]

16:36 thats just not true, I got dead reckoning that way o a sniper battle on 2fort

[@Square_Rabbit]

When the Self-Aware Beauty Mark is turned into regular Jarate with the weapon switch thing, does it retain the slightly changed physics, or does it just go as far as regular Jarate does? I'm guessing the latter, but I guess it could be purely visual, so I thought it was worth asking.

[@llmkursk8254]

Not sure if it says it on the wiki, but there’s a visual bug with Pyro head replacements and cosmetics such as the glasses on the That 70’s Chapeau. If the hat is in the first cosmetic slot, the head replacement (such as a Foster’s Facade) will show “over” the glasses, as if they were invisible lenses. You can fix this on your own by ordering the head replacement above the That 70’s Chapeau. If it still has the layering issue, just switch to a different loadout and then come back. Not sure if the same happens outside the loadout menu, but I wouldn’t be surprised.

[@KimFareseed]

17:28 Was how I earned my Huntsman. Did not know about that bug, was on Degroot Keep.

[@Ringtail]

one minor issue I've never seen mentioned is that when Scout holds mad milk the liquid in the bottle sloshes around depending on your movement, but when Sniper holds jarate the liquid is static. it's not much but it bugs me.

[@jacobboggs71]

I love the Machina sound effect glitch because it feels appropriate. Yeah getting two kills in one shot is awesome and deserves getting cheered for, but getting more kills in one deserves louder cheers to the same degree of how many people you killed. Yes I know it's annoying but if you ask me it's a dopamine rush like no other

[@Pinsplash]

15:37 I had this via a soldier's rocket. It's in one of my TF2 videos.

[@Enthusiastik295]

The 16 snipers when they die: summons satan

[@ecksdee1149]

Is it possible to light your arrows by spawning as pyro, shooting fire and quickly changing to huntsman sniper? Evwry time you change class while in spawn you also move around the spawn by a few feet. Meaning if you were luck you couldshoot flames as pyro then change to sniper and spawn just in front of where you were as pyro and catch the flame particles before they vanished, hopefuly igniting your arrow. Could that be possible?

[@ron35]

I actually experienced the Machina's bug with the second shot appearing when recoiling, but with the classic and its semi-tracer. It actually happened earlier today without me knowing why it happened.

[@demoman5864]

4:21 free unusual taunt?!?!

[@jey5806]

(not clickbait) (get now!!!!)

[@Nikkibuh]

for the Cleaner's Carbine bug, the poster probably meant the cl_uses_worldview command that was meant for VR.

[@boss_boy_]

I think the "Jarate being invisible" bug on the cozy camper is most likely due to a layering bug in the renderer. To vastly simplify a years worth of Computer Science, each game has what's called a "drawing stack," a big list of items that the game has to draw for each frame. Every time a new frame is rendered, the computer starts at the bottom, the stuff that would usually be drawn over later, like the skybox or the level map, then works it's way up to the top, with each item further up the list typically being smaller parts of the game world, like a player model or a view model, however certain items can at times be manually tagged to be of "high priority," meaning the computer will render said item later than it usually would, with that item in turn being drawn over several other parts of the scene. What's happening here is that someone at Valve set the Darwin's danger shield at a higher priority than the Jarate, meaning that the game will render the Jarate, then render the danger shield over it, meaning the Jarate looks see-through. TL;DR: The bug with the Invisible Jarate on the Danger Shield is most likely the result of some programmer incorrectly setting some internal flags the game uses when it draws the screen, meaning that the shield is one of the last things drawn, meaning that it overlaps everything else in the game world.