http://bugs.winehq.org/show_bug.cgi?id=17750
--- Comment #12 from David davidsboogs@gmail.com 2010-06-04 19:48:47 --- Unfortunately when ATI dropped support for my GPU I had to find a workaround: namely selling that laptop and never buying another device with ATI graphics. Which means I no longer have a system on which to test this issue.
When you say "Still need the regression test..." what do you mean? Comment 4 has the results of the regression test showing exactly which commit started the problem.