I have the same problem in Xubuntu, fwiw. Firefox is unable to set itself as the default browser no matter how many times I restart it and click "Set as Default Browser" in its settings menu or its pop-up reminders complaining that it's not the default. And clicking on links in Thunderbird opens up in Chrome. However XFCE settings *thinks* it's the default, if I open it up and look.
I eventually gave up and re-installed via apt using the mozilla.org repo, and that version has no problem setting itself as default, so it's clearly a snap packaging problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1967963 Title: Firefox snap cannot be set as default browser under KDE To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1967963/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs