Uber Login with non developer email id?

The apps login behavior changes when we are using
a email id which is part of developer/admin (or)
or another user.

One of my beta user tried to login to the app and he got the following page after login.
https://dl.pushbulletusercontent.com/mGuAhhAkEAJ4fSisAebCJt8Xpn8x9AN4/Screenshot_2015-06-04-20-05-30.png

The expected behavior is we should be redirected to a page with access token.
When I added the beta user as part of my app developer, it got redirected with access token.

Has something regressed at the uber backend?
Or is it because my app is not public yet?

I was just wondering how will the judges be able to test since they are not part of my developer list or admin.