We had the same issue on a machine that was upgraded to High Sierra. I
know this sounds odd, but we discovered that changing the user's account
icon then rebooting did the trick.
We've been battling this for the past 24 hours as we just got our first
machine with High Sierra preinstalled. Our standard practice is to have
users log in with their Active Directory credentials, create a mobile
account, and then register their acc...
