You are right. The package was not installed. Now it works. I've installed Ubuntu 22.04 Desktop, minimal. Maybe the package xdg- desktop-portal-gnome is missing for that mode, but should be installed by default.
I apologize for the comment about snap. This fixes also a problem with google chrome. Chrome freezes after closing a file dialog without that package installed. I'm very happy with the quick help. Thank you very much. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1970424 Title: firefox snap can not open any file dialogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1970424/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
