title: openActiveSessionWithReadPermissions always displays webview (iOS)
body: <p>I have an iOS app that has been working fine for about a year with the Facebook API.</p>
  
  <p>Recently I updated to the latest version of the Facebook API.</p>
  
  <p>What I'm noticing is that when I call openActiveSessionWithReadPermissions now, I always get the web UI, even if the user is logged in to Facebook in the Settings of the iOS device. In the past, I would typically just get a native confirmation dialog.</p>
  
  <p>Is this an intentional change in the API or do I need to look at what I'm doing?</p>
  
  <p>Thanks.</p>