Fortunately, one of the recent updates has seemingly fixed this issue. I've tried several things like downloading some files and repeating the above processes and that weird box hasn't happened yet so looks like it's been triaged pretty well.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1706476 Title: "julyshakedown" mysterious shadow around window when check marking and option box inside of window. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1706476/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
