title: Show Assistant Editor missing in Xcode 11?
body: <p>In Xcode 10, the toolbar had an inter-locking ring icon which showed the assistant editor, it's missing in Xcode 11. </p>
  
  <p><a href="https://i.stack.imgur.com/Qi19p.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Qi19p.png" alt="Xcode 10"></a></p>
  
  <p><a href="https://i.stack.imgur.com/T6ZBX.png" rel="noreferrer"><img src="https://i.stack.imgur.com/T6ZBX.png" alt="Xcode 11"></a></p>