[Bug 55279] New: Window hidden on Windows is displayed when using KWin.

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55279

Bug ID: 55279
           Summary: Window hidden on Windows is displayed when using KWin.
           Product: Wine
           Version: 8.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 74892
  --> https://bugs.winehq.org/attachment.cgi?id=74892
Depiction of the problem.

When using the latest version of KDE Plasma on OpenSUSE Tumbleweed, even with
the "No Titlebar and Frame" window decoration rule set to allowed,
https://github.com/yereverluvinunclebert/Panzer-Earth-gauge-VB6/issues/5#iss...
appears.

If you can't load that link, I've attached the image to this issue.

To reproduce,
0. Clone https://github.com/yereverluvinunclebert/Panzer-Earth-gauge-VB6.git
1. Invoke
https://github.com/yereverluvinunclebert/Panzer-Earth-gauge-VB6/blob/main/Se...
2. Invoke
https://github.com/yereverluvinunclebert/Panzer-Earth-gauge-VB6/blob/main/Pa...

Logs are the same as those at
https://bugs.winehq.org/attachment.cgi?bugid=55278&action=viewall.

```log
PS /home/rokejulianlockhart> wine --version
wine-8.12
PS /home/rokejulianlockhart>
```