hanks. Given that you're using the Store version, not much can be done. Even if it is a bug. Updates to the Store version are only issued when a new (full) release is published.
I suggest downloaded and "installing" the Portable version. Place it in a new folder called C:\MusicBee (or something else to your liking.) You can keep the Store version installed until you have the Portable version set up the way you want. Once you're happy with the set up, you can remove the Store version. You could install the Installer version instead of the Portable, but most seasoned MB users use the Portable. Both the Portable and Installer get frequent patch updates.
Grab the v3.5 Portable or Installer version from the first forum topic. Once you've got it in place, come back here and download the latest 3.6 patch from my signature below. Unzip it and copy the files to where you placed MB and let it overwrite the existing files. You'll now be on the latest version.