Comment 24 for bug 1521302

Please do NOT promote the usage of Terminator (as it is found in Xenial).

Terminator uses a much older version of the same terminal emulation widget (VTE) than gnome-terminal, which contains way more bugs and lacks plenty of useful features present in newer versions. You might get a superior experience when unmaximizing, but will get an inferior one at many-many other aspects.

If anything along these lines, I can recommend trying Terminator's gtk3 bzr branch, or Terminix (neither one shipped by Xenial).