Firefox Mac autofill works intermittently

I think I see a pattern to the failed cmd-. fill commands. When I have multiple login/passwords for related sites, cmd-. just does nothing. For example, I have separate login/passwords for beta.waldorfmusic.com and waldorfmusic.com. When I click on the 1Password icon, it opens a box with both entries and lets me choose the correct one instead of being smart enough to recognize the URL I'm actually trying to access.

In previous versions of the extension, rather than do nothing cmd-. would open a similar dialog. The extension could at least recognize when it thinks there's more than one choice and open the dialog box rather than force me out to the mouse to click my way through. Even better, the extension could recognize the full URL and distinguish it from any partially related URL's in my database.