http://bugs.winehq.org/show_bug.cgi?id=10142
--- Comment #10 from Alexandre Julliard julliard@winehq.org 2008-03-19 06:44:38 --- Actually it's precisely because some window managers insist on keeping windows inside the screen boundaries that Wine needs to have a workaround to hide windows when they are moved off-screen. The problem in this case is that it's the window manager itself that's moving it off-screen, not the windows app. We need to be able to detect that case and handle it differently, but that's not trivial.