I just noticed this problem today. Been working fine for a few years, but after windows decided (without my permission) to update to 21H1 this started. I did a regedit to stop the updates. But I read that it doesn't work now days.. And this seems to have been an issue for over a year, and still not fixed with "new and improved windows 10".
OT: I'm using the machine as a media server for the family and would like to keep it online 24/7, but now after the first update got through it decides to update almost every night. Which mess up some stuff that I need to manually fix every restart.
This is the reason I'm thinking of going back to Linux. Only problem is some applications don't work as good as it does on windows. Which is a shame.
Note: I haven't enabled updating just for this reason. Something always stop working or adding to the list of defective stuff.
Edit: A weird fix is setting the taskbar on top. If you're using 3x1