Thanks for the info.
First thing I'd do is a Google search using this URL:
https://www.google.com/search?q=site%3Agetmusicbee.com%2Fforum+play+countThere are a good number of hits and I'm not going to read through them all. But I can't readily recall anyone else raising this issue before.
If you can't find anything via the search, I suggest getting rid of the Store version and using the Installer or (preferably) the Portable. First off, if it is truly a bug, it won't get fixed quickly since the Store version doesn't accept patched updates.
If you want to save your settings and panel arrangements so you can bring them into the Portable (or Installer) version:
Edit > Saved Settings > Save/Load Settings Snapshot
View > Import/Export > Export/Import Panel Arrangement
Get the latest 3.4 Portable from the forum Latest Version section and place it in a newly created directory - something like c:\MusicBee. Do not place it in any Windows-controlled directories (i.e. \Users.) Then apply the latest patch as shown in my signature below.
Understand that I am not saying using the Portable or Installer version will fix your issue, but getting rid of the Store version would be the first step in determining what's going on.