Thanks for your bug. That's not a bug, but a feature. As you can notice to the "Tabs" menu, those are the shortcuts to move the selected tab to the left or the right, which is what you call "weird behaviour". You can changed the keys assigned if you prefer. I'm marking that bug as rejected since that's not a bug
** Changed in: gnome-terminal (Ubuntu) Assignee: (unassigned) => Ubuntu Desktop Bugs Status: Unconfirmed => Rejected -- Holding down shift causes weird behavior switching tabs w/ keyboard https://launchpad.net/bugs/46062 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs