http://bugs.winehq.org/show_bug.cgi?id=30670
--- Comment #7 from Aric Stewart aric@codeweavers.com 2012-06-05 10:24:54 CDT --- Created attachment 40397 --> http://bugs.winehq.org/attachment.cgi?id=40397 debug patch
I really have no idea what is going on here. It looks like the window proc is corrupted or something.
I have attached a simple debug patch that will spit out some more debugging line for me. Could you apply it and generate a new log?