URL: https://www.walmart.com.mx/checkout
Browser / Version: Firefox 53.0
Operating System: Mac OS X 10.12
Problem type: Something else - I'll add details below

Steps to Reproduce

1. Navigate to: https://www.walmart.com.mx/checkout
2. Write your personal information
3. Try to edit that information

Expected Behavior: You must be able to delete or change your information with the keyboard

Actual Behavior: You can't edit or delete any letter, phrase or word after wrote it.

Details: It doesn't work on Firefox only.

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