I can confirm that I see the same behaviour (100% reproducible when creating new tabs) when using the zukimac theme.
$ sudo dpkg-query --show compiz unity zukimac-gtk-themes compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1 unity 7.3.2+15.04.20150420-0ubuntu1 zukimac-gtk-themes 1.5 Changing to the standard Ambiance theme and gnome-terminal behaves as expected. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1451944 Title: Gnome-terminal in Ubuntu Unity shrinks to minimum size To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-terminal/+bug/1451944/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs