http://bugs.winehq.org/show_bug.cgi?id=27142
--- Comment #10 from GyB gyebro69@gmail.com 2011-05-24 10:44:10 CDT --- The issue is truly fixed for me, I've tried in fullscreen as well as in virtual desktop mode.
Bruni is running Xserver 1.10.1, mine is 1.9.5: might it be a difference?