http://bugs.winehq.org/show_bug.cgi?id=33873
--- Comment #9 from artik jeff.artik@gmail.com 2013-06-24 18:02:06 CDT --- Ok I confirm, I tried exactly same thing (comment 4). Result is the same. After 1.5.31, bug.
Maybe creating an action script that save for exemple 20 copy on the desktop in Photoshop, and running it could reproduce the bug. Is there a lot's of changes between 1.5.31 and 1.6 rc2 ?