FB.getLoginStatus not calling its callback

Question

The title really says it all. Under some (undetermined) conditions FB.getLoginStatus() just stops working and won\'t invoke the callback I gave it. The only interesting clues

Answer 1

In Facebook App Settings, go to Client OAuth Settings, look at Valid OAuth redirect URIs

Make sure you have listed all URIs which are the domains from which Facebook SDK is being invoked. For example:

I develop at localhost:5000 and deploy to Heroku. Notice the format: http://domain.name/