It seems the Facebook Login
native behavior is different with iOS 11.0. (For Standalone app)
Before iOS 11.0:
It opens safari, propose you to connect with facebook app or the facebook account connected on safari mobile.
In iOS 11.0:
It opens safari and ask to enter the email and password. It’s the same behavior as the
web behavior (which open a web view dialog) but on safari.
Can anyone confirm this? And find a possible fix?