As according to new facebook policies, an App has to be reviewed and approved by Facebook in order to use Taggable Friends and publish_actions features.
I have created Test Users with Facebook App to provide the facebook review team with but when I publish it throws following error:
"(#200) The user hasn't authorized the application to perform this action".
It is all good with my real account which I have added as Developer in the app and the Admin account as well.
Any help ?
That was actually a bug from Facebook end, it works fine now.