http://bugs.winehq.org/show_bug.cgi?id=22893
--- Comment #7 from Don Doumakes doumakes@loganet.net 2010-05-27 18:07:16 --- Sure enough, running in opengl mode fixes the problem. I had been opening WoW using a desktop shortcut, whose command line specified -opengl. Fiddling around with the desktop shortcut ("I'll use Launcher.exe instead; what could go wrong?") removed the -opengl argument and created the symptoms.
You can mark this bug invalid/solved/user-is-a-bonehead.