Just some additional info regarding this, I ran into the same behavior as soon as I set the SSL-TLS to Auto (from "yes"), and I was booted out of the system. Tried to log into it, entered my credentials correctly and the page would simply "refresh" to the same login screen, rather than passing the credentials and logging into the UI.
I launched another browser and then was able to log into the UI. After closing and re-opening the first browser I was able to log in.
Potential bug, but I don't know if something like that would have been logged. If it is, let me know and I'll attach whatever you need.
