testing musescore with Qt 5.15

Hi all, In devel project musescore is now updated to 3.6. According to [1] there are issues with Qt 5.15. Balping and I have tested it and did not encounter these issues. I would appreciate a couple of others testing it before I submit it for factory. I'll give it a week before submitting. It's in multimedia:apps Thanks, Cor [1] https://github.com/musescore/MuseScore/pull/7119