That is a feature of the netbook layout in Ubuntu MATE 18.04, which is now EOL. Since Ubuntu MATE 22.04 the netbook layout is no longer available.
** Changed in: mate-panel (Ubuntu) Status: New => Invalid ** No longer affects: ubuntu-mate ** Changed in: marco (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1805796 Title: WIndows commands are duplicated when any window is maximized. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/marco/+bug/1805796/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs