name field

Hi Matthew
In the name field. I have two boxes one says First Name and the second says Last Name when I go to test this and the browser asks if I want to autofill and i click autofill my first name and last name are placed in both fields.

in other words in the First name box i have my first name and last name and in the Last name I also have my first name and last name when I use the auto fill

am I doing something wrong or not filling something out

thanks

http://wordpress.org/extend/plugins/visual-form-builder/