Launching MuseScore 3.6 crashes MuseScore 4
S2 - Critical
Not much to say about this one. Attempting to launch MuseScore 3.6 while MuseScore 4 is currently running invariably results in MuseScore 4 crashing, while MuseScore 3.6 launches as usual. Doing it in the reverse order — for some reason — does not produce a similar effect, and both versions can happily coexist.
Running MuseScore 4.0.0, revision 5485621 and MuseScore 3.6.2, revision 3224f34 on Windows 10.