Mixer in version 4.4.2 is not displayed

[DmitryArefiev]

Description with steps to reproduce

https://musescore.org/en/node/369069

the problem has already been reported on other forums:
In version 4.4.2 the mixer window is not displayed.
The problem is known on Windows 10 and probably Windows 11

https://musescore.org/en/node/369131

I have started using version 4.4.2, and I wanted to open the mixer in a score, it is difficult to explain what it looks like, so I attached a screenshot.
Looks like it has gone blank, but at the bottom left I can see little bits of the mixer itself.

There is another issue itself: I have a backup of a score (also in .mscz) on a different part of the PC, when I open this, on pressin g the "Play" button, MS immediately shuts down. When I run it again, MS stops responding.

https://musescore.org/en/node/341876

I can't open the mixer as it has disappeared somewhere.
I noticed that it would open in random places on the screen each time I opened a new session and it would resize.
The last time I saw it, it had resized quite small and now today I can't locate it anywhere. I have searched around the edgers f the screen and tried resizing my layout etc but I can't find it anywhere.

Supporting files, videos and screenshots

What is the latest version of MuseScore Studio where this issue is present?

4.4.2

Regression

Yes, this used to work in MuseScore 4.4.1

Operating system

Windows 10, Windows 11

Additional context

No response

Checklist

• This report follows the guidelines for reporting bugs and issues
• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible