Built in fonts don't show up / look invalid in font settings

Inter, the default font is fine since Obsidian Release v0.15.7 (Insider build)
Yet, some built-in fonts (e.g. Source Code Pro) show up in the font list, and work when set but are shown as invalid:
And others (e.g. Avenir Next, and less relevantly, Flow Circular) also work but don’t even come up in the list.