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 Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1718238 Title: Giant terminal icon is blocking out the Terminal window buttons To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1718238/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs