MS3 version for newer Linux distros (e.g., Mint 21.1)

I have been using MS3.6.2.MuseScore-3.6.2.548021370-x86_64.AppImage in Linux Mint 19.2. LM 19 is about to reach end of LTS, so I installed LM 21.1 for dual-boot. I tried using my MS 3.6.2 in LM 2.1 and the first thing I noticed is that I could not get past the initial config screen, evideltly because of a library incompatibility. Then I saw Jojo-Schmitz's comment https://musescore.org/en/node/334718#comment-1181518 about his PR updating MS 3.6.2; I figured he most likely built for a newer Linux distro with updated libs, so I decided to try it to see if it was an MS3 that would run under LM 21.1.

I went to the bottom of https://github.com/musescore/MuseScore/actions/runs/4281504277, logged into GitHub, downloaded the file and unzipped MuseScore-3.7.0.4281504277-x86_64.AppImage, and tried running it in LM 21.1. It opened, and I was able to load a MS3 score, but playback mode would not run, and there were a few other problems with mouse-click functionality. So it's almost there.