"Install Failed" doesn't give any details about what failed
- Open a font (in my case, League Gothic Regular on a Debian 9 system) in some situation that makes the install fail
- Click install
- Notice that even though the button says "Install Failed" there's absolutely no information about what went wrong - not even if I run it from the terminal
Ironically I can't actually give more precise STR because I don't know went wrong, because of this very bug :P
I can say that I'm on Font Viewer 3.22.0 though.