This happend to me too. I'm running Ubuntu Budgie 16.04 using the Elementary GTK theme. Switching to a different theme seemed to stop this unwanted behavior, so in my case it must be a bug in the Elementary theme.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1686623 Title: Gnome terminal window shrink on exit focus with wayland To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1686623/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs