Profile update for r/o directory

I just upgraded to 2.8.3 and our global policy is that high level admin users accounts (that we use as admins accounts on our atlassian apps) are not allowed to be mail enabled. Crowd pulls from AD and it's read only sync.

When I logged in for the first time, I was taken to a My Profile page - the email address was empty as it should have been, I hit update and got "The supplied email address is invalid.". Trying to give it an email address gives an "You do not have permission to update your profile."

Given it's a read only directory, there shouldn't even be an update button.