Why can harmonic noteheads not be hidden? (The respective option in the engrave panel does not affect harmonic noteheads! - why?)
Harmonic noteheads are not “real” noteheads in the way that standard noteheads are, so they’re not hide-able. Your only option is not to actually use the harmonics created via Properties in this circumstance.
Thank you. Could that be an issue for a future update? Even more tedious is the fact that glissandi with artificial string-harmonics are represented with one line only, so we have to add a 2nd one manually. I think this correlates also with the “unreal” harmonic notehead.
Yes, I agree that ideally Dorico would handle these situations more automatically. I can’t make any promises as to when it will, however.