If you invoke the 1Password extension to fill a website, the top-most result is not selected. This means that the user has to click or use the keyboard to move to the correct entry to fill it. I believe that the top-most result used to be automatically highlighted so that it could be filled in.
Additionally, didn't the extension used to autofill the login if only 1 match was found? This is also no longer occurring.
1Password Version: 7.0.514
Extension Version: Not Provided
OS Version: Windows 10
Sync Type: Not Provided