Steps to reproduce:

1. Go to https://apple.com/
2. Enter Responsive Design
3. Click on the drop down for user agent string
4. Select Other…
5. Enter the UA string of one's choice

Expected:
Save it with a specific name

Actual:
It's a one time game.
As soon as we restart, we need to re-enter the string.
If we need to fire tests for multiple UA string, we need to have a document on the side with the list of UA strings, and cut and paste continuously.