title: UINavigationController Back Button not visible, but works
body: <p>I have a scenario where my UINavigationController is missing the back button (left button) but tapping the left button still seems to work.</p>
  
  <p>I found a similar problem posted here: <a href="https://stackoverflow.com/questions/919832/uinavigationcontrollers-back-button-disappears">UINavigationController&#39;s back button disappears?</a>
  which was resolved by not setting the title to @"", but that's not my problem. Are there any other scenarios that would cause this behaviour?</p>
  
  <p>UPDATE:</p>
  
  <p>In case it matters here is my view hierarchy: My MainWindow contains a UINavigationView which first loads a UIViewController (this view contains a Map). When tapping on an annotation accessory button it then loads a UITableViewController. It's this view that should have the back button.</p>
  
  <p>Thanks.</p>