http://bugs.winehq.org/show_bug.cgi?id=15925
--- Comment #12 from Adys adys.wh+winehqdotorg@gmail.com 2008-11-08 03:11:06 --- Could users having this problem try this?
- Go in winecfg, graphics and disable pixel shaders - In game, go in graphic options and disable Triple Buffering as well as Full Screen Glow - Eventually, try disabling the GL_ARB_vertex_buffer_object extension with http://www.wowwiki.com/Wine_(software)#Registry_Tweak_for_FPS_Boost
For me, it fixed this bug as well as bug 15926 and bug 15927