[Bug 10769] New: Window contents spontaneously move to root (0,0), stops updating

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=10769

           Summary: Window contents spontaneously move to root (0,0), stops
                    updating
           Product: Wine
           Version: 0.9.50.
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-x11driver
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: trick at icculus.org


This is a little Windows program used to generate sound effects:

http://www.cyd.liu.se/~tompe573/sfxr.zip

Run it and play with it for a little while (space to play sound).  After a
little while -- the exact period varies, but it's usually within a couple
minutes, sometimes a bit longer -- the contents of the window spontaneously
moves to the top left of the screen (ie the root window), escaping its window
frame, and the window contents will stop updating.  The program still runs and
works fine in its original window frame, as can be verified by modifying
sliders (blindly) and playing the sounds, though file windows won't pop up. 
Usually I also get this message in the console when this happens:

err:region:CombineRgn Invalid rgn=(nil)

This happens both with and without wine emulating a virtual desktop.


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