I have a laptop and two external monitors on 18.04. I had to ditch gnome for unity to return workspaces to a good place. You can chose unity at login over the

I have a laptop and two external monitors on 18.04. I had to ditch gnome for unity to return workspaces to a good place. You can chose unity at login over the new default gnome which I thought was a nice touch by the Ubuntu developers.