I have the 'Sign In with Facebook' process configured in EasySocial, I've created the app in Facebook and setup the App ID and secret. All seems to be configured correctly.
When I click the 'Sign In with Facebook' button, a popup opens from facebook, I authorize the facebook connection, the parent page then redirects to the EasySocial login/register page. I'm not logged in at that point and a new user account was not created.