OTOH VS Code on a semi-old Debian 9 runs perfectly, from a regular .deb package and repository.

I spent just as long fighting snap when I wanted to use a custom font with ligatures. User-installed fonts don't work with snap, apparently. I would've spent substantially less time figuring out the problem, but I didn't even know I had the snap version - I typed `apt install code` and transparently got a snap package instead of a deb.

I'm honestly kind of confused because it's really easy to install VS Code on Fedora through the officially provided RPM package, and there is an automatically-installed repository so that it's kept up to date.

Anecdotally, I’ve been using the VS Code snap (with the —classic flag, I believe) on Ubuntu 20.04 for the past couple of weeks without issue.