In the end, both problems (SaveDialog focus & bad theming) were due to the use of snap version of firefox. Installing the .deb from PPA resolved both : https://www.omgubuntu.co.uk/2022/04/how-to-install-firefox-deb-apt-ubuntu-22-04
Why on earth Ubuntu decided to use snap? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1949340 Title: [upstream] Saving downloads or pages is difficult because of unfocused file chooser dialog To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1949340/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs