I've got two nearly-identical Ubuntu 16.04 LTS systems, installed from the same DVD.
They basically act the same, but with one annoying difference.
On one of them I am getting the Unity menu on my login screen and in RDP sessions.
RDP sessions use Xfce and regular logins use gnome.
Here is a screenshot (logged in via RDP to Xfce desktop):
When I pull down Applications it works fine, but I should not be seeing that gnome menu down the left side at all. On the other system it doesn't show until I log into gnome.
It also shows it on the console login screen, but isn't functional until I log in.
In both cases (login screen on the console and RDP) it should not show at all, and is non-functional.
How do I set this back to normal?