This was fixed as part of the 3.30.2 release from bug 1789451, so I marking this bug as fixed released. I have also tested on an Ubuntu Cosmic daily iso that after installing gnome-software-plugin-flatpak that the menu now becomes available.
Thanks! ** Changed in: gnome-software (Ubuntu) Status: Triaged => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1791553 Title: Update preferences is not shown when flatpak plugin is installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1791553/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs