Couldn't find anything listed about this issue. I've only noticed the issue with Firefox and when 1Password has been idle for a while and I need to put in my Master Password. After I put in my password, the extension unlocks, but then at the top of the 1Password mini window, it prompts me to install the extension. I found that if I dismiss it and then unlock 1Password again, it does the right thing and lists the credentials stored for the given website I'm on. I have not seen this same issue with Safari or Chrome. Just wondering if anybody else has seen this issue.
1Password Version: 6.8
Extension Version: 4.6.9
OS Version: macOS Sierra 10.12.6
Sync Type: 1Password