Every attempt to get a user specified OpenID to connect in 3.9 has failed. Attempting sign up via livejournal openid succeeds in 3.8.3.
Sign up to livejournal.com
Go to profile, take the http://username.livejournal.com url
In Zanata, go to Sign up
Enter the url into the OpenID field
Accept the connection on the redirected LJ page
The "New User" page shows, but a "Login Failed" notification shows also. Filling in the details and pressing Sign Up shows a red error page
Fill in the form, press Sign Up should show an "Activation email" message