I have a lab full of Ubuntu 22.04 machines and have (finally) set them all up with AD login via SSSD

As i was testing, new SSSD users were added to the Gnome3 Greeter bage. Somewhere along the way with testing, new users stopped being added to the greeter page. The ones added previously automatically are still there, but new ones are not being added.

I was wondering what configurations effects this behavior? I want the little kids names added to the list so they can just click on their name and enter their password.

Here is my setup script: https://github.com/BancroftSchoolOpenSource/UbuntuSetupScript

Any tips would be helpful!