I have created an additional user via the GUI and subsequently changed their GUI and UID so they match other servers I have on the network (and I can use shared filesystems properly). Once I do that the user is not available on the login window, user admin window, or as an available user in the Power menu on the GUI top right.
Question: Can anyone suggest how to change GUI and UID for users in Elementary after they are created?
Note: I did find a workaround - and that is to create the user via the command line from an admin account using useradd below. But if you change it after creating via the GUI then it breaks things.
sudo useradd -u 502 -g 20 username
Ubuntu and Fedora let you specify the UID/GID in the GUI when creating the user - so that could be a nice feature request for ElementaryOS