Name and email fields repeatedly lose focus

## What Happened
I typed my name into the "name" field and email into the "email" field. On each keystroke, the field would become un-focused. Pressing tab would bring me back into the field, but with all the text selected. Pressing tab again would not bring me to the next form field.

Other form fields were unaffected / normal. I was still able to complete the form by laboriously entering one character at a time.

## Expected Behavior
The field should remain focused as long as I am typing in it, and pressing "tab" should take me to the next field.

## Steps to Reproduce

1. Add item to cart
2. Go to checkout
3. Type into name and email fields

## Platform Information
Firefox 87 on Elementary OS 5.1