1P must be open for it to fill in pw in FF. Is this usual behavior?

Newly installed 1P and extension in FF, and turned ext. on. iMac, Big Sur.

When I try to use 1P to fill in usernames/passwords in FF, the message that comes up is "open 1P", so I have to fill in the master password.

I thought 1P would fill in these for me without being open, so this makes 1P vastly less useful.

Am I doing something wrong [likely!]?

Polly

1Password Version: 7.8.6
Extension Version: 2.05
OS Version: Mac Big Sur
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