In App Game Center Leaderboard and Login use Device Orientation and Change Unity Orientation in the Game

Using Unity 5.3 Orientation Setting: LandscapeLeft

iOS build

 using UnityEngine.SocialPlatforms;

My game is set to LandscapeLeft in Unity.

However when I call up

 Social.localUser.Authenticate(ProcessAuthentication);

As I do at void Start() If I am not logged in to Game Center and I am holding the device oriented to Portrait; it Changes the orientation of my game to Portrait and stays that way unless I pause and un pause the game until it crashes or resets.

I'm assuming there is something I need to change in Xcode. This should be considered a bug since it reverses settings inside Unity.

Has anyone encountered this problem and what can I do to fix it?