[Bug 35516] New: Microworlds EX hangs when clicking toolbar button

http://bugs.winehq.org/show_bug.cgi?id=35516

Bug ID: 35516
           Summary: Microworlds EX hangs when clicking toolbar button
           Product: Wine
           Version: 1.7.11
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
    Classification: Unclassified

Created attachment 47411
  --> http://bugs.winehq.org/attachment.cgi?id=47411
Output of `bt all` when the problem happens

The program "Microworlds EX" hangs when I:
1) click on a toolbar button and hold the mouse button down,
2) move the mouse pointer anywhere outside the toolbar button, and then lift
the mouse button

To reproduce, install http://www.lcsi.ca/files/solutions/mwexdemo.exe, click
"Free mode" on the launcher, and then do the 2 steps mentioned above ^.

OS: Ubuntu Trusty 14.04
wine: 1.7.11-0ubuntu1~saucy1 (from wine PPA)

The issue happens with any Microworlds/Wine/Ubuntu versions we've tried, even
really old versions of them, and on whatever PCs.
In doesn't hang in any Windows versions that we've tried.