Unexpected behavior on creating a new login

A strange thing happened just now…
Using Opera browser I came to this forum. The extension failed to show me that I already had a forum account. (That is 1 “strangeness”. Never happened before.) So I created a new account. Bitwarden offered to update the password and I clicked “yes”.

To my surprise, upon checking, I saw that Bitwarden updated my Bitwarden vault account. Good thing that I checked up on things right away.
Question: any way to pre-determine which item entry is being updated when Bitwarden offers to update a password??