Unmaximizing the terminal doesn't restore it to its previous size

[Bruno Nova]

I'm using Ubuntu 16.04 (Unity).

To reproduce the bug:

1. Open a terminal window and maximize it.
2. Unmaximize it.

Instead of returning to its previous size, it resizes to occupy the entire screen.

I remember this being an issue in a previous Ubuntu version, but it had been fixed.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-terminal 3.18.3-1ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Apr 28 22:03:16 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-04-25 (3 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)