http://bugs.winehq.org/show_bug.cgi?id=34367
--- Comment #10 from Ken Thomases ken@codeweavers.com 2013-09-02 20:40:11 CDT --- The crash appears to be due to a bug in Xlib. It's not a Wine bug. Bug 32859 is closed "upstream" because the problem has to be fixed in another project on which Wine depends.
(Some people claimed certain crashes due to Xlib bugs were fixed by upgrades to Xlib, but apparently not all such Xlib bugs have been fixed.)