Issues with 1Password in Safari and Safari Tech Preview

I'm using 1Password8 on macOS with Safari, Firefox, Edge, and Safari Technology Preview. I've found the extension in Safari Tech. Preview doesn't work properly (though it did with 1P7). When I try to unlock within the browser, I'm prompted to authenticate which appears to work but I see Safari (not the Tech. Preview) "blip" as though the extension is calling the wrong browser internally. In essence it's unlocking but only for the installation in Safari not within Safari Tech. Preview (even though I initiate the unlock from Safari Tech. Preview which is otherwise an entirely separately application).