Shell crashes when changing fonts in use
I've noticed that apps on X11 platforms in general tend to destabilize when you change the files of currently used fonts from under them. In my Cantarell testing, I regulary overwrite the font files in my ~/.fonts
directory with newer revisions for testing and usually have to quickly restart Shell before it crashes on me. Shell and GTK apps like to garble font output until I restart them. I noticed that e.g. Firefox on macOS will maybe blank the text but re-render it with the new font after a second or or so.
Is this a problem in Shell/GTK or deeper down the stack?