It seems that playback of glissandi on harp stops working if the gliss ends on a grace note. Is this usual or am I missing something?
Maybe I should phrase this differently.
Is there any way to get a harp gliss to play back properly when the gliss ends on a grace note? i.e. It only plays the notes at the start and the end.
No, I don’t believe so. I’m not sure what the best workaround for this would be. Perhaps you could add a rhythmic note (rather than a grace note), scaled down to grace note size, in another voice, and attach the glissando to that? You’ll also need to select the unwanted rests that appear in that extra voice and use Edit > Remove Rest to suppress them.
Many thanks for the suggestions @dspreadbury. It may be easier to leave the (pretty neat) notation alone and assign “proper” playback to a different non-printing staff.