Crash in a score with tremolo in invisible staff in multi-measure rest
1) Create a score with two instruments, say, Voice and Violin.
2) In Violin staff put two notes with a tremolo between them.
3) In Instruments dialog make Violin staff invisible.
4) Enable MM rests (M).
5) Save/close/reopen a score (test file at this stage: 03_tremolo_invisible_staff_mmrest1.mscz ).
6) Do one of the following:
- Press "Play"
- Press M
Result: crash (or, more precisely, a fatal message "Chord::tremoloChordType(): inconsistency 0x0 - 0x0, this is 0x561731df7c40").
A workaround is to enter a note input mode, fill that MM rest with notes and undo everything to the initial state. That doesn't help though if processing a score via a command-line.