I am using google-oauth. I tried putting the patch you gave. The result is still the same.
I have configured the callback in the auth0 dashboard as well.
The /authorize gets called multiple times. Once the login is success and comes back to the logged in page of my application, /authorize throws error 400. I have put the screencast in http://ge.tt/4PHD8uv2 .
Let me know your thoughts.