M59dev. iPhone7, iOS10.2.x. 

Have a credit card, email address, and mailing address populated for form-fill to work.

- go to https://teechip.com/depet#id=0&c=131313&sid=fruit-of-the-loom-cotton-t&s=front
- pick an item and choose "pay by credit card"
- tap in the email or address fields
- tap auto-fill chip on the keyboard accessory view

expected:
- form fills

actual:
- nothing happens

For the credit card field, nothing is even suggested.