title: unity 2017.1 facebook 7.10 login not working, dialogue not displaying (iOS)
body: <p>Recently upgraded to unity 2017.1 and facebook sdk 7.10 and the login dialogue no longer displays on device when making the FB.LoginWithReadPermissions(..., ...) call. I do not receive a response in my callback function and the dialogue never displays. Nothing seems to happen, no logs, no errors. </p>
  
  <p>This was working in Unity 5.5.3 w/ a previous version of the facebook sdk. I have noticed that if I include facebooks sample scene and I am able to login through the sample scene. This makes me believe something has changed with the implementation that is causing my project to block the dialogue from being displayed.</p>
  
  <p>Any suggestions would be appreciated.</p>
  
  <p>EDIT: Forgot to mention this was an iOS build.</p>