http://bugs.winehq.org/show_bug.cgi?id=21708
--- Comment #30 from Stefan Dösinger stefan@codeweavers.com 2012-12-22 17:35:04 CST --- The cursor symptom looks like the background is not redawn correctly. This could be a side effect of the hacks, or because the hacks are incomplete solutions.
The missing background fixed by attachment 42907 is a driver bug. The issues addressed by the other patches are legitimate driver limitations that aren't handled correctly by Wine.