Unable to unlock 1Password in a "add to dock" web app in Safari

Hello. In a recent update, Safari "add to dock" web apps are now able to use extensions. I can see the 1Password icon in the upper right corner of the window for my web apps.

However, it doesn't actually seem to work. If I click the little 1Password icon that appears in a username text box, nothing happens. Ditto if I try to use the Cmd-\ autofill shortcut.

Is the 1Password team aware of this? Any fix coming?

Thanks!