A 1Password extension for the new DuckDuckGo browser for Mac?

Thanks. Yes, I've used Universal Autofill in DuckDuckGo browser. Attempting to log in here though, I had a few issues.

First time the input field focus changed as it was autofilling, and it filled in half the password at the end of the username,

Second attempt it missed a few characters off the end of the password.

Third attempt it wouldn't auto-fill anything at all, so I closed the browser window, reloaded the page and it worked that time.

I see in that blog post you linked above that Browser Extensions aren't implemented yet so currently a dedicated 1Password extension wouldn't be possible. Hopefully the relevant development teams will talk to each other to discuss what is required to make it happen.