Metronome marking fail

Hi,
I seem to have done something that has caused the quarter note in the metronome marking to disappear (from write/engrave/print). Does anyone know what could be wrong?
Thanks,
Peter
Screenshot 2021-03-13 at 18.43.42

If you’ve updated recently, have you definitely restarted your computer (if on Windows)?

Otherwise, have you changed the Metronome Music Text Font style to something that isn’t SMuFL-compliant? (Which I suspect it should be, and if so I need to add that to the manual…)

Thanks. For some reason I had indeed changed the Metronome Music Text Font style setting.