Name when registering is asked as one field, but then is broken in two

[villanueval]

I just registered using twitter and noticed that the system asked for my full name using one field. However, the update page broke it in two fields. I added the first name, initial and last name in the registration and the system placed the middle name initial in the last name field.

If it is going to have separate fields for the first and last name, should ask this way at registration.