Saves "wrong" password

Registering at a new website. When asked for a password, I click on the 1Password icon and get a three-word password. I copy and paste that password where asked and save. When I go to the 1Password desktop app, I check to make sure the password was saved "correctly" and find an entirely different password. When I double click on the website in my Logins, I'm taken to the correct website and the "surprise" password turns out to be the correct one for that site. What is going on? Why wasn't the password that I copied and pasted saved?

1Password Version: 7.9
Extension Version: 7.8.8
OS Version: Mac OS 11.6