Stopping the MUSESCORE4 when deleting an instrument
In a score containing a SATB and a Piano, to remove the Piano:
1. Open INSTRUMENTS
2. Select 'Piano'
3. Click the 🗑️ (Recycle Bin) button
Result: after a few seconds MUSESCORE4 stops (as when closes the application).
When restarting MUSESCORE4 it reports an abnormal shutdown and proposes to restore the previous session.