Qt menus
This only affects Qt. It also only affects menus. Menus are fine when you launch an application. As soon as you move or resize it menus open up in the wrong place, which shouldn't happen because I send a ConfigureNotify to let applications know this is happening. Interestingly enough, when you fullscreen and unfullsceren the said window, the issue is fixed until you move/resize again... but obviously setting and unsetting _NET_WM_STATE_FULLSCREEN on moves/resizes is probably not the best idea?