I finally find the answer. There is another button only available for administrators called: Nominate for release. askubuntu.com/questions/511878/how-to-add-another-ubuntu-version-to-affects-list-on-launchpad-bug
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1170647 Title: After minimizing a Nautilus window of another partition or external media or Trash folder, clicking on the "Files" icon on the Launcher again doesn't restore the minimized window, but opens a new one To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1170647/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs