It appears that when you edit a profile, it changes the user's name field to their username.
So let's take for example, my friend Greg who has a username of "Eastking" as seen in the admin user list:
Once I go in to edit his profile, it replaces his name with his username.
Keep in mind that when I click "cancel" when editing his profile in the backend, the username is not changed.

I have attached both admin and ftp access. This has been tested across multiple users to confirm this issue.