Latest 1Password version enabled the native autofill in MacOS to be use accross the system 1Pass Autofill for MacOS
With this, the extension is no longer needed, but it does not work on Orion.
I enabled third party autofill in the settings, the Password app's passwords works great but with 1Password there is an error that you can see in the attached. It is in spanish, but in english is something like: "No service identifier has been found"
Tested without any extension enabled and in a new clear profile.

In Safari this new feature works properly, therefore the issue would be on how Orion communicates with 1Password implementation, from one side or the other.
In the native autofill Orion should pass the site to 1Password to search for it and autofill the fields.
1.1.1 (149)
Tahoe (26)