[Samba] strange auth issue

[Sonic]

First time I've seen this:

Samba Version 4.5.6-GIT-f4219b7 as PDC
Windows 7 client

New system I was setting up. Joined the domain, no problem.

On reboot, I did a typo on the domain name, something akin to:
DOMIAN\administrator
Instead of:
DOMAIN\administrator

Yet, I was logged on, desktop was setup, etc. Logged off to verify my
mistake and loogged on with the proper domain name, and it was the
same account - desktop was already setup, no new profile, etc.

Chris