We've implemented CB facebook connect and we are having an serious issue with following usecase (only with a new user):
For a new user, when an user is already logged into facebook, tries to signin via fb connect signin, it goes nowhere. It does recognize the facebook logged in user in the popup but once the user clicks on allow permission button, nothing happens- the new user is not created within Joomla/CB, is not logged into the site etc.
Please help ASAP, this is critical issues for us.