http://bugs.winehq.org/show_bug.cgi?id=24373
--- Comment #1 from Dmitry Timoshkov dmitry@codeweavers.com 2010-09-13 00:46:08 CDT --- It seems that Windows doesn't remove window borders when maximizing, it moves the window to -1,-1 and makes the window larger by +2,+2 so that the border moves outside of the screen.