Bug reported by Emiliano Grilli:
start recording MIDI (by pressing the record button on the transport window)
play in some actual note events
stop recording by hitting Space in the main window for punch-out
The sequencer then often crashes. No meaningful trace yet.
Also, when testing this I ended up with a great many overlapping segments of duration 3840, at time 0 on the recording track, containing nothing but a clef change. Sounds like a side-effect of the recent modification to add a default clef to recorded tracks.