http://bugs.winehq.org/show_bug.cgi?id=34113
--- Comment #4 from Andrew Fan andrewsuicune@gmail.com 2013-09-29 13:06:16 CDT --- 16 vs 32 bit: I do not believe I have such a utility
x11: I haven't tried this yet.
Still present in 1.7.3
(In reply to comment #3)
Are you using a third-party utility to switch your Mac to 16-bit color ("thousands") instead of 32-bit color ("millions")? If so, does switching to 32-bit color fix the issue?
Does switching to the X11 driver fix the issue? You can switch by setting the registry key:
[HKEY_CURRENT_USER\Software\Wine\Drivers] "Graphics"="x11"