Duplicates shown on cmd + /

1Password for Mac 8.12.10 (81210036)

Firefox 150.0b10

1Password Extension 8.12.4.46

Using CMD + / to fill in a login always shows duplicates of the login - see screenshot.

Some sites show 2 some show 3 duplicates. 

Some websites fill in the entry without prompting - which is as expected if there is only 1 entry for the website.

On websites where I have more than one login entry in 1Password, it shows duplicates of all the logins.  For example, on the British Airways website I have 3 entries - for 3 different family members - I am shown 6 choices on pressing cmd+/

This forum shows 3 entries, there is only 1 login in 1Password.

Again, it's different for different websites - I haven't been able to find a common thread.