[Bug 21528] New: 'Minimize windows' fails with all delphi 5 applications

http://bugs.winehq.org/show_bug.cgi?id=21528

Summary: 'Minimize windows' fails with all delphi 5
                    applications
           Product: Wine
           Version: 1.1.37
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=25936)
 --> (http://bugs.winehq.org/attachment.cgi?id=25936)
It happens after minimize command

I'm not sure about affected applications, but all my legacy Delphi 5
applications are affected. I have attahced the quite simpe programm. How to
reproduce:

1) run application;
2) minimize it (using caption button);
3) switch to it (using alt+tabl or something);
4) you'll see something like this (screenshot sttached).

it happens with 100% 'success' in Kubuntu 9.10 (KDE 4.3) . In Kubuntu 8.04 (KDE
3.5) it happesn with approx. 50% chance.

This bug was introduces in 1.1.x versions, maybe early.