On Debian testing, whenever I run a browser from the terminal, I get four lines of the following error:
Fontconfig error: failed reading config file
I have already tried all the steps mentioned in the two posts, apart from installing the tar, since I'd like to keep the
snap version. When I first installed the browser, I had rendering issues on more websites (like Stackoverflow), but installing Microsoft core fonts fixed this. Now, the issue seems to be with Helvetica only, however,
fc-match Helvetica shows that Helvetica is correctly matched with Arial.
So my conclusion is that somehow the "snap Firefox" is not able to read the
fontconfig files (firefox-esr works fine, just like Opera and other browsers). I think the problem is not confined to Firefox Quantum though, because the error appears when I run another browser from command line as well. It just doesn't cause any issue there.
So the question is really how to fix the
fontconfig setup? I have already reinstalled and ran