When switching app to fullscreen it show black screen.
I have narrowed down the problem to this:
<window resizable="false" if="desktop" />
So, if resizable is false, there is black screen, but mouse interaction is working.
If resizable is true, fullscreen works, but scaling is not working!
stage.scaleMode = openfl.display.StageScaleMode.SHOW_ALL;
Using latest Lime and OpenFL, I had no this problem with older versions.
No such problems with Flash or HTML5 either.
Might be the same problem for Mac OS.