[Bug 12579] New: regression : cohabitation between windows in "mdi" application

http://bugs.winehq.org/show_bug.cgi?id=12579

Summary: regression : cohabitation between windows in "mdi"
                    application
           Product: Wine
           Version: CVS/GIT
          Platform: PC
               URL: http://home.scarlet.be/linux/compteco/test3.zip
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winex11.drv
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

In this test program (http://home.scarlet.be/linux/compteco/test3.zip)
a message box appears with wine 0.9.58 but not with wine 0.9.59.

Regression test says : 
--
cb3ff54789c652b02d852f40db71cafd9fd67ca9 is first bad commit
commit cb3ff54789c652b02d852f40db71cafd9fd67ca9
Author: Dmitry Timoshkov 
Date:   Tue Mar 25 16:52:41 2008 +0800

winex11.drv: Don't add owned windows to the taskbar.

:040000 040000 b5aacd661276c67ba4e09eb9f777dfe34abd4b87
33799f10903f1342db701ef812bbb39400b6949d M      dlls
--

That's prevents my software - http://home.scarlet.be/linux/compteco/index.html
- to start.