App not seeing music on Android 11 phone

[wrnoof]

My Android app works perfectly as a remote control for my Mezzmo PC media server. However, when I use the phone as a server, i.e., Mezzmo (local), I get strange results.

First, the app seems to perform normally for video and photos.
Second, "Filesystem" returns only a blank screen.
Third, "Music/Genre" crashes the app. It just closes.
Fourth "Music/Album" displays albums with no album graphics. Tapping on an album either returns a blank screen or crashes the app. Recently, crashes seem to be the preferred mode.
Fifth, "Music/Artist" displays folders for each artist with no graphics, but, again, the folders appear to be empty. No files are displayed. Or, the app simply crashes or closes when tapping on the folder.
Sixth, "Music/All Music" displays all of the music files correctly with associated graphics. Playing a file closes or crashes the app when playing to the phone or an external networked device.
Seventh, "Music/Party Shuffle" displays files with the correct associated graphics. Tapping a file to play it closes or crashes the app. The playing device choice does not make a difference.
Eighth, "Music/Recently Added" displays files with the correct associated graphics. Trying to play a file closes or crashes the app. The playing device choice seems to make no difference.
Ninth, here's what I think is really strange. When I have used the app to control Mezzmo PC server, the playlist from Mezzmo PC server remains displayed on the "Playlist" screen of the app. When I switch the app server to "Mezzmo (Local)" that playlist is still there and plays from the phone just as well as if I were using the app and phone as a remote control for Mezzmo PC. All my PC music is also on the phone, so the app plays the playlist as well from the phone as from the PC. Go figure.

I have uninstalled/reinstalled the app with no success. I like having the app work as a local phone server playing to the phone as a device. That way the phone's bluetooth connection will play music on the phone through my car stereo. Right now that feature is not available to me. Any suggestions?

[Peter]

We have not had a chance to test the app on Android 11 yet so there may be some issues with the changes to how Android allows apps to access files from the media store db. We will try to test to see if we can reproduce the issues.