Solar panel problems on Sydney roofs

How are our Sydney roofs coping with solar panels?
Roofs perform the best when they are free from any foreign materials sitting on its surface. As soon as something is placed on top of a roof, leakage problems arise.
Solar panels are a prime example of foreign objects introducing fresh roof leaks. Yes, if you install solar panels on your roof, you may have just compromised its waterproofing function.
So, what are the problems with installing solar panels on Sydney roofs?
Most of these problems do not show up during the warranty period. We are starting to experience problems quite a few years on.
Maybe it is time to up the game on solar panel installations?

[@tedk-42]

Thicker packers seem better - there's always gonna be a gap from the bracket

[@TheUweRoss]

I've got a tile roof here in Florida. It has excellent south-facing exposure with near perfect pitch for our latitude, but there's no way I would put solar on it. However, I do have room for a ground-mount, so that's what's being installed next month.

[@sydneyshinshi]

No hope. Too many cowboys in that game.