title: Cannot get name & email with sign in with Apple on real device
body: <p>So I'm implementing sign in with Apple, everything goes well on the simulator, I request email, fullName scopes, the authenticate UI shows, and I can get the data, as images shown below: </p>
  
  <p><a href="https://i.stack.imgur.com/ZMMWq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ZMMWq.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/R3xUi.png" rel="noreferrer"><img src="https://i.stack.imgur.com/R3xUi.png" alt="enter image description here"></a></p>
  
  <p>But when testing on real device (iPadOS 13, iPad 2018), the UI didn't show (it does not asks for name and email on the UI), and I can't get the email, fullName from the response, and I can also confirm that the <code>authorizedScopes</code> are empty, I can only get the user identifier</p>
  
  <p><a href="https://i.stack.imgur.com/LfMlS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/LfMlS.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/TVeuP.png" rel="noreferrer"><img src="https://i.stack.imgur.com/TVeuP.png" alt="enter image description here"></a></p>
  
  <p>I believe this is a bug and will file a radar, also posted a discussion on the Apple developer forum (but they usually won't approve my post, I don't know why)</p>
  
  <p>If this is not a bug, can somebody tell me how to fix this?
  Thanks</p>