autofill behavior match failure?

Running 1pass beta on Fedora 37 & Firefox 107

If website ==

https://nas.example.com:12345

and in 1pass Autofill Behaviors

 Fill anywhere on this website
[ ] Only fill on this exact domain

then I visit

https://nas.example.com:12345/#/signin

the 1pass account item's credentials ARE presented in the field drop-down

But if I switch to exact match

[ ] Fill anywhere on this website
 Only fill on this exact domain

then again visit

https://nas.example.com:12345/#/signin

the 1pass account item's credentials are NOT presented in the drop-down.
seems like it fails to match.

Is the non-match a bug? or a syntax issue?

Checking for syntax, the provided link

"Learn more about autofill behaviors"

re-directs to

https://support.1password.com/autofill-behavior/

which 404s

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1Password Version: 8.9.11-1
Extension Version: 2.6.1
OS Version: Fedora 37
Browser:_ Firefox 107.0.1