[Bug 52974] New: MuLab 9: subwindow loses focus instantly

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52974

Bug ID: 52974
           Summary: MuLab 9: subwindow loses focus instantly
           Product: Wine
           Version: 7.7
          Hardware: x86-64
               URL: https://www.mutools.com/mulab/app/mulab-app-9-0-35-win
                    64.zip
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ArchLinux

When you open ML9 and right-click on any track head, and then click on "Choose
Target Module", the subwindow loses focus instantly. It likes that the new
window that should pop up stays behind the main window.

No idea why the specific client causes so much trouble and how much this is
application specific (ie. whether the focus handling is supposed to be
completely handled by wine or whether it forwards some windows API), but it
does seem that the window reacts to changes in the active window and my guess
is that this turns into a race between the main window (claiming focus and
becoming active when the popup closes) and the target module window when the
context "popup" closes.

More information about this bug can be found at
https://bbs.archlinux.org/viewtopic.php?id=276107