If unity doesn't respond to the mouse while it's overdrawing the lock screen, then its input windows are probably still stacked correctly (below the lock screen). In that case, this is an overdraw bug and not a stacking bug.
Thus stacking fixes in compiz won't help, but my work in progress to avoid overdraw in unity should fix it: https://code.launchpad.net/~vanvugt/unity/regionalDamage/+merge/109809
If unity doesn't respond to the mouse while it's overdrawing the lock screen, then its input windows are probably still stacked correctly (below the lock screen). In that case, this is an overdraw bug and not a stacking bug.
Thus stacking fixes in compiz won't help, but my work in progress to avoid overdraw in unity should fix it: /code.launchpad .net/~vanvugt/ unity/regionalD amage/+ merge/109809
https:/