http://bugs.winehq.org/show_bug.cgi?id=8184
--- Comment #9 from Vit Hrachovy vit.hrachovy@sandbox.cz 2007-10-04 15:04:47 --- This issue is related to OffscreenRenderingMode=pbuffer ONLY.
Using fbo the problem vanishes even for 0.9.40 and in 0.9.46 using fbo works perfectly.
Using pbuffer the problem still persists in 0.9.46.