http://bugs.winehq.org/show_bug.cgi?id=31710
--- Comment #23 from Erich Hoover ehoover@mines.edu 2012-10-17 17:09:00 CDT --- (In reply to comment #21)
Fixed by cc7bf355c50b17b2e04f754c80464289df2a9ee7.
Silverlight PlayReady windows (such as http://web.sldrm.video.msn.com/d1/sldrm.html) still don't paint properly after this commit and can be fixed by setting ClientSideGraphics=N.