http://bugs.winehq.org/show_bug.cgi?id=8635
------- Additional Comments From vit.hrachovy@sandbox.cz 2007-27-06 15:18 ------- According to comment in AppDB, the bug can be avoided if user switches off refraction shader in his oblivion.ini:
bUseRefractionShader=0
However, this is not the default setting, so leaving the bug alive - we may profit from fixing it.