The issue persists with firmware 1.12.8

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.

@ahorner thanks for letting know!

I've been experiencing a similar issue with two recently purchased ATOM Lite devices. However I couldn't even connect at all with UI flow on version 1.9.5.

I've been using the vscode extension as I find it to work butter than using UI Flow Desktop and Web. But still need to flash the device constantly.

Although I can successfully download and run the code, I can't get it to run in App mode, I suspect the OP might have the same problem.