Autofill not working on Android tablet with keyboard

I have a Samsung Galaxy S9+ with a detachable Samsung EF-DX820  keyboard/case cover. Both the tablet and 1Password releases are current.

With the physical keyboard active, autofill doesn't work.  If I lift the tablet off of the keyboard, I get an on-screen virtual keyboard and autofill works as expected.

How can I get the best of both worlds? I want the keyboard working along with autofill, just like I get on my Windows desktops.

Thanks!