One really annoying problem, in firefox the mouse cursor position is wrong. Clicking in firefox clicks on the thing 30-ish pixels above my mouse. I noticed that it only happens when firefox is snapped to the left or right half of the screen (of course that's how I almost always use it). I can fix it if I maximize firefox then snap it left or right. 100% scaling on the monitor, nothing funky, reset theme/appearance, reset my firefox profile, etc...