After updating to 1P7 from 1P6, my experience has been horrendous.
1P no longer reliably responds to cmd+\ hotkey, and no longer fills website data at all. I've reinstalled everything multiple times, restarted many times, open Chrome, close Chrome, open 1P, close 1P. Nothing works, and literally nothing works.
Everything was broken in 1P7-stable -- I updated to beta builds just in case this was a know issue that was fixed.
1Password Version: 7.3.3.BETA-0
Extension Version: 18.104.22.168
OS Version: OS X 10.14.3
Sync Type: Dropbox