http://bugs.winehq.org/show_bug.cgi?id=27176
--- Comment #5 from Jonathan Strander mblackwell1024@gmail.com 2011-05-16 00:22:14 CDT --- Managed to get a bisect done (via a tedious workaround):
84f085fb91a17e2efe83de0642b757948f4e8a7d is the first bad commit commit 84f085fb91a17e2efe83de0642b757948f4e8a7d Author: Alexandre Julliard julliard@winehq.org Date: Thu Apr 28 13:07:05 2011 +0200
winex11: Grab the mouse in the thread that owns the foreground window if possible.
:040000 040000 fe3d768e97741ff67dd42c7dbdce965bb265d813 c349391d2f8d8a43a649e7bf85dc98168167d27c M dlls