TrueType font not recognized as such

[Kreeblah]

I have a license for MonoLisa, and I figured I'd use it for Genie as well. However, when I attempt to set it in the font picker that pops up via the button in the configuration panel, I get an error that says "Invalid font selected. Please select a TrueType font."

The thing is, these are TrueType fonts. And FontForge can open them just fine (and also reports them as TrueType fonts).

For environment info, I'm running 4.0.2.9 on Windows 11 ARM with a .NET runtime of 6.0.36.

Any idea what might be going on with this?