Can't load fonts on Core 2 using UI Flow desktop

[slavs]

I have a brand new Core 2 and I've loaded the latest firmware (1.12.7)
I want to display some large text, so I chose the font Montserrat 48 in UI Flow.
The app fails with the error "name 'FONT_MONT_48' isn't defined"
This is happening with a few different fonts.

Secondly, I can't even seem to view the files on the Core 2 using ampy.
Nor can I view anything with the vs code extension, which has been broken for me for months.

[slavs]

The issue persists with firmware 1.12.8