I upgraded from 17.10 to 18.04 today, and I still have this problem as well. In response to comment 21:
Is the icon really giant (144x144) or smaller (48x48)? It is smaller after the upgrade to 18.04. Does installing/removing gnome-icon-them do anything for you? Yes, installing the gnome-icon-them as per comment 8 appears to fix the issue; uninstalling the gnome-icon-them causes the issue to return. What size is the icon reported as when executing xprop from gnome-terminal and clicking on the gnome-terminal window? When the issue is present, xprop reports: _NET_WM_ICON(CARDINAL) = Icon (48 x 48): -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1718238 Title: Giant terminal icon is blocking out the Terminal window buttons Status in gnome-shell package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Confirmed Status in ubuntu-themes package in Ubuntu: Invalid Bug description: Upstream: https://gitlab.gnome.org/GNOME/mutter/issues/23 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: light-themes 16.10+17.10.20170918-0ubuntu1 ProcVersionSignature: Ubuntu 4.12.0-13.14-generic 4.12.10 Uname: Linux 4.12.0-13-generic x86_64 ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Sep 19 12:47:51 2017 InstallationDate: Installed on 2017-09-19 (0 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170917) PackageArchitecture: all SourcePackage: ubuntu-themes UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1718238/+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