Leon Friedrich

The PR currently runs into some deletion issues relating to deleting grid entities after they have been sent to null-space). These are the same problems that #3008 needs to deal...

> Is this still alive? The actual issue this is related to still hasn't been addressed: should we switch to using `System.Numerics` for vectors/matrices or keep using `Robust.Math`. If people...

Ill probably re-organise sprite component & layers and try to fix this, as well as some other sprite issues. Just waiting to avoid causing conflicts for #2970

AFAIK no "wall mounts" are required to be on a wall. Maybe that should be a requirement for things like air alarms, but buttons on tables or the floor really...

IMO the right way to fix this is to just add a generic list serializer that can use other serializers (see #2973).

Actually, seeing as its not actually using a custom serializer, it should still be using the `SpriteSpecifierSerializer`, So the CI should still be checking it?

It seems to work fine for me on master. Are you using it in your hands to set the label? (you don't set label by clicking on something else)

I guess its possible theres some other bug that causes it to stop working after some time or something.... I guess re open this if it happens again?

I might just not properly understand the gamestate manager/processor, but I think that when `_waitingForFull` is true it uses the wrong tick when calling `ResetPredictedEntities()`? Or more generally, because `CurTick`...

As a thing for forks/downstreams, all this would really require is: - For full release: forks can just update their own `build.py`s to combine resources from two different folders, prioritizing...