i installed musescore and it works fine. But when I start it from the console, there are permanently errors while musscore is running.
So I asked in musescore forum for this problem
I got these answer:
'Weder die ‘native’ Version noch die von FlatPack wird hier unterstützt, nur die AppImage Version,
I see in the manjaro repos musescore native and musescore flatpak. I tried both and both comes with the same error.
Now I installed “appimagelauncher” and downloaded musescore a an appimage-file and it works fine without errors.
So I think, manjaro should offer musescore in the repos as an appimage - file and not native or flatpak.