http://bugs.winehq.org/show_bug.cgi?id=16580
--- Comment #21 from DL taedium_vitae@eml.cc 2010-05-17 23:42:31 --- I've been able to reproduce this bug again, but it only occurs with virtual desktop mode or when unchecking "allow window manager to control window". When the window management settings are left to their defaults, the sky is not distorted.