It seems likely that exo-open is stopping at the `env` command in the launcher:
env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/firefox_firefox.desktop /snap/bin/firefox %u -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1967111 Title: exo-open --launch WebBrowser does not work with firefox snap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/exo/+bug/1967111/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs