http://bugs.winehq.org/show_bug.cgi?id=13547
--- Comment #43 from D dbuck@novell.com 2008-10-09 19:37:57 --- Nevermind, I finally got it compiled in.
The workaround doesn't actually minimize the game, it just puts it in the background of all the other apps. When it is actually minimized, it still loses textures. Clever way for a workaround, though.