http://bugs.winehq.org/show_bug.cgi?id=20808
--- Comment #9 from Roderick Colenbrander thunderbird2k@gmail.com 2009-12-28 14:50:55 --- I guess that your wine was not compiled with libXcomposite support. We use this during windowed opengl rendering. When the composite libray isn't around we fall back to some pixmap rendering 'hack'. In recent drivers nvidia fixed their drivers which breaks our hack. I'm not sure if you used the window rendering hack or not (you might have to force it in the code). In case of osx it is used because some libs aren't around.