Face ID Not Working [Fixed. Please see the approved answer for details.]

Yes. 1Password 7. The problem I am having seems to be the same problem discussed in this thread so rather than start a new one I posted here (sorry if it was the wrong place).

Last night when I went to log in to something 1Password 7 has stopped using Face ID to login, only presenting the Master Password login. Not that Face ID wasn't working, it just wasn't there at all. Just no Face ID. This was true regardless of how I tried to use 1Password - stand alone or through a web browser. It had been working the day before. The only thing that changed over that time was that I installed iOS 15.6.1 the night before. Face ID is working correctly with everything else I expect it to work with and is turned on for 1Password. I haven't tried un/re-installing 1Password 7 but plan to do so later this afternoon when I have a minute.