Mojave Login Issues

I installed Mojave on a brand new MacBook Pro and after the installation process, the initial login screen accepts my credentials, shows the desktop for 5-10 seconds, then goes back to login. Every subsequent login attempt produces the same result, including in Safe Mode.

I spoke with Apple via support chat about it today, and we tried reinstalling Mojave. No dice. We then booted into recovery mode, launched Disk Utility to mount the drive, then Terminal to remove "/Volumes/Macintosh HD/var/db/.AppleSetupDone" and reboot. That sent me back to the setup process after install. I created another user and had exactly the same issue with that user. They have escalated the issue and I have a call with them in two hours.

Any recommendations?