This is actually a Unity issue in how it handles the unmapped Software Updater window. I'm able to reproduce the issue using the instructions in https://bugs.launchpad.net/compiz/+bug/1003950/comments/87.
I think I have a fix and will propose the solution very soon. ** Package changed: compiz (Ubuntu) => unity (Ubuntu) ** No longer affects: update-manager (Ubuntu) ** No longer affects: update-manager (Ubuntu Precise) ** Also affects: unity Importance: Undecided Status: New ** Changed in: unity Status: New => In Progress ** Changed in: unity Importance: Undecided => High ** Changed in: unity Assignee: (unassigned) => Christopher Townsend (townsend) ** Changed in: unity Milestone: None => 7.3.3 ** Changed in: unity (Ubuntu) Status: Triaged => In Progress ** Changed in: unity (Ubuntu) Assignee: (unassigned) => Christopher Townsend (townsend) ** Also affects: unity/7.2 Importance: Undecided Status: New ** Changed in: unity/7.2 Status: New => Triaged ** Changed in: unity/7.2 Importance: Undecided => High ** Changed in: unity/7.2 Assignee: (unassigned) => Christopher Townsend (townsend) ** Changed in: unity/7.2 Milestone: None => 7.2.6 -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/989588 Title: update-manager popup is shown on launcher and alt-tab list but window doesn't show up To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/989588/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp