Multiple fingerings are being used because I'm working on a heavily annotated edition of a work that suggests multiple sets of fingerings for a single passage. I'm currently choosing to engrave harmonic symbols (the flageolets) as fingering objects as well because I need them to behave like fingering objects instead of script objects.
I will open an issue! Though I fear the solution for me right now will be monkeying around in an SVG editor to make the notation. -Fennel
