It turns out this is only a problem in Wayland sessions and it doesn't matter how you open the document (nautlius or command line, such as `gedit doc.txt`) so changed the package.
** Package changed: nautilus (Ubuntu) => wayland (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to wayland in Ubuntu. https://bugs.launchpad.net/bugs/1770898 Title: App window is not raised when a second document is opened (in Wayland sessions only) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1770898/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp