I've done some exploratory testing of Wayland/portal related tests from the test plan on a Bionic VM and things are working normally.
$ apt policy flatpak flatpak: Installed: 1.0.9-0ubuntu0.4 Candidate: 1.0.9-0ubuntu0.4 Version table: *** 1.0.9-0ubuntu0.4 500 500 http://ppa.launchpad.net/ubuntu-security-proposed/ppa/ubuntu bionic/main amd64 Packages 100 /var/lib/dpkg/status 1.0.9-0ubuntu0.3 500 500 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages 500 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages 0.11.3-3 500 500 http://gb.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946578 Title: Update for CVE-2021-41133 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/flatpak/+bug/1946578/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs