http://bugs.winehq.org/show_bug.cgi?id=30341
--- Comment #5 from Alexandre Julliard julliard@winehq.org 2012-04-04 05:31:29 CDT --- The size of a maximized window is set to the screen size minus the caption. That's how Windows does it. Ideally it would be adjusted based on the wm metrics, but that's pretty hard to do, and it's not clear that apps would be able to cope with a window larger than the screen.