Could you please confirm whether you're using Ubuntu's new default, that is, GNOME on Wayland?
If so then this is a duplicate of bug 1288655. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/1725698 Title: Size decreases when cycling between full-screen mode using F11 Status in gnome-terminal package in Ubuntu: New Bug description: Launch an gnome-terminal and cycle between full screen and normal by pressing F11 twice. The original size of the terminal is not restored. Doing this multiple times, the window continues to shrink. This did not occur on 17.04 or earlier. I use this regularly as part of my workflow. Obviously, this is a minor issue, but it sure is annoying. This bug does not exist in terminator FWIW. I'd prefer not to switch to terminator, however. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-terminal 3.24.2-0ubuntu4 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat Oct 21 09:49:18 2017 EcryptfsInUse: Yes InstallationDate: Installed on 2016-04-22 (546 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gnome-terminal UpgradeStatus: Upgraded to artful on 2017-10-20 (1 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1725698/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp