title: UINavigationItem Back Button touch area too large
body: <p>On this following screenshot, if I click on "v" from "Available Kiosks" this is launching the action of the back button... (not with the second "a").</p>
  
  <p><img src="https://i.stack.imgur.com/QsBda.jpg" alt="alt text"></p>
  
  <p>I don't understand why, I've nothing special in my code (this is the default backbutton handled by the navigation controller).
  I also have the same bug with another application I did but I never notice this on others applications.</p>
  
  <p>Any Ideas ?</p>
  
  <p>Thank you.</p>