Go to apple.com. Try to purchase anything. As a guest or as an existing user (add a new card). My husband discovered it. I was able to reproduce it.
1Password 7 (10.14.6 (18G87) in Safari)
Version 7.3.3.BETA-0 (70303000)
1Password 7 (10.14.6 (18G87) in Chrome)
Version 7.3.2 (70302004)
Should I submit Feedback with Apple?
1Password Version: 7.3.2, 7.3.3.BETA-0
Extension Version: Not Provided
OS Version: 10.14.6
Sync Type: Family