I tested it again with the regular Gnome-based Ubuntu desktop, and it exhibits the same bug, so i changed the title accordingly. It seems there is no connection to the flatpak problem.
** Summary changed: - Kubuntu: Failed to add PIDs to scope's control group + Failed to add PIDs to scope's control group -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1742804 Title: Failed to add PIDs to scope's control group To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1742804/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs