Hi, hopefully this is the correct place to post this.
I want to report a Chaos bug with GeometryCollection crashing, especially seems to happen when it’s being destroyed (actor/component).
I have a system where you can harvest rocks in my game, the rock meshes turn into GeometryCollection components (gets added to an actor) when they are destructed, but if multiple of them exist in the world (for example I harvest like 2 rocks before the first destructible despawns) it can cause a crash.
This is a major issue, fortuntely I have managed to find a workaround for my need, I have fixed it by making it so when a new destructible needs to spawn, it checks if there are any previous ones in the world and it disables their actor collision and physics, which seems to absolutely fix the issue (another option would be just destroying all the other GeometryCollections once a new one spawns).
Please let me know if you need any additional info. As much as I would love to make an official report for this, I do not have the time to try to reproduce it on a new project currently.
Hopefully this helps those experiencing it.
Thanks.
This is UE5.
EDIT: this solution still does not fully fix the issue – makes it rarer but not much more, still happens 
What seems to work better is to destroy the other GeometryCollection actors when the new one spawns, making the crash even rarer, but it still happens.
The next thing I will be trying is removing the removal variable from my GeometryCollection, as the crash log seems to be related to that maybe, I hope.
EDIT 2:
disabling the RemoveOnMaxSleep kinda fixed the issue, but a different crash starting popping up randomly from the same actions… What solved that crash was adding the thing from before which destroys any other GeometryCollection actor when a new one spawns.
So the actual solution to this seems to be to disable RemoveOnMaxSleep on your GeometryCollection asset, and also destroy any other GeometryCollection actor/component when a new one spawns.
God bless whoever decided to remove the destructible mesh system while chaos being this buggy crap that it currently is.