Crash when the virtual piano keybord is open and a note outside its range gets selected or entered
MuseScore crashes when the virtual piano keybord is open and a note gets moved below A0 (where A0 is the lowest available key on that virtual piano keyboard). or above C8 (which it the the highest available key there)
Crash also happens when having a note below A0 or above C8 in a score, opening the piano keyboard and then selecting that note.
Came up in https://musescore.org/en/node/270929
MuseScore 2.1.1, Windows 10. No other versions tested (yet)