I've done it and something is now messed up!
Related to this bug:
https://bugs.launchpad.net/ubuntu/+s...se/+bug/458703

many things now don't work e.g. windows created with this flag
Qt Code: 
  1. setWindowFlags(Qt::FramelessWindowHint);
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don't react on messages like ALT+F4 (cannot be closed).
Some buttons just don't work like those ones in Eclipse to create new project (to fix this you must open Eclipse setting GDK_NATIVE_WINDOWS=1).

Does anybody have had the same problems ?

PS: is it maybe OT here ?