View/Edit profile form is broken

The "Location" field in "View" and "Edit" profile form displays user name, instead of actual location string. Also, this field becomes required together with "password" field, which is wired.

I suspected that this field has another meaning - your user name, but after I saved my changes, the value from this field appeared in "from" string of my profile near my posts. Which is fine.

Also, I've never set my location as a my user id (why would I?), so the migration process also should be checked.