My comment #1 analysis was based on Update Manager, which is not actually the affected component. It however still applies to the affected component, ubuntu-release-updater, insofar as the marking the dialog transient causes the issue.
** Changed in: ubuntu-release-upgrader (Ubuntu) Assignee: (unassigned) => Nathan Teodosio (nteodosio) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2070150 Title: Cannot move a window of a pop-up with error message To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/2070150/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs