http://bugs.winehq.org/show_bug.cgi?id=21516
--- Comment #1 from The Source thesource@mail.ru 2010-01-31 00:46:17 --- Drawing is restored by moving the window to another workspace. Looks like it is not a complete hang, drawing just stops for some reason. I play diablo 2 in DirectDraw mode, so the problem is probably there (both gdi and opengl modes suffer from this).