I've discovered that Firefox doesn't open applications via protocol links.
- Kubuntu 24.04
- X11
- Firefox 133.0.3 (.deb)
- Upwork 5.8.0.35 (.deb)
The first indication was after installing the Upwork desktop app (built with Electron), the login page (in Firefox) did not return to the app via the upwork:// link.
So, I went to one of my local sites and injected a mailto: link. Firefox should open Thunderbird, but nothing happened.
Firefox can open links from other applications (just tested with Discord).
As far as I can tell, these protocol handlers are configured correctly in Firefox.
I just changed Firefox to open Ocular for PDFs, which worked.
I'm not concerned about mailto: not working, but I suspect if those are fixed Upwork will work as well (which I need).
I'm out of ideas. Any more out there?