http://bugs.winehq.org/show_bug.cgi?id=13683
--- Comment #21 from Erich Hoover erich.e.hoover@gmail.com --- (In reply to comment #20)
Created attachment 47558 [details] Log of WINEDEBUG=warn+ddraw,warn+d3d,warn+d3d_surface for a ~20s gameplay which includes the case where the missing second cursor should show/hide
The attachment is gzipp'ed as the original log is ~ 35 MB. The gzipped version is considerably smaller.
Based on the wine-devel emails not seeing anything really obvious... Have you tried running a WINEDEBUG=+cursor,+icon,+resource log? It's possible that the application is trying to use a "traditional" cursor.