http://bugs.winehq.org/show_bug.cgi?id=13773
--- Comment #15 from Jeff Gringo dunerkahl@yahoo.de 2008-11-22 07:38:35 --- in 1.1.9 the problem still exists. As a workaround, you can tab-switch to another app, then back into the fullscreen application. After that the menu bar is hidden (in counter strike you have to do that while connecting to a server, otherwise it won't work).