Yes, AbstractPolygon did most of the recent enhancements.
The emulator sidebar misbehavior on mobile is an old bug, and even tried to quickly figure out what was going wrong, but didn't manage to do it
Thought I'd fixed this as well, but I see it's still popping up. I think the emulator is not initializing before the container it's in gets sized so the size is getting set to zero. I'll look into it.
