title: ios8 splitviewController and inconsistent size classes iPhone6+
body: <p>I'm currently playing around with sizeClasses and iOS8 and I've noticed what I believe could be a bug (not sure if it's limited to the simulator or devices as well) but wanted to check here first.</p>
  
  <p>Using the standard "Master-Detail" template when starting a new project, I've noticed that the traitcollection appears to be inconsistent  on the detailViewController depending on when you inspect it on an iPhone 6+ in landscape mode.</p>
  
  <p>I've added in an NSLog on <code>viewDidAppear</code> and <code>willTransistionToTraitCollection</code> in the DetailViewController to view the traitCollection and these are the results</p>
  
  <p><strong>iPhone 6+ launched in landscape</strong></p>
  
  <pre><code>View did appear trait collection &lt;UITraitCollection: 0x7fe76b4895f0; 
  _UITraitNameUserInterfaceIdiom = Phone, 
  _UITraitNameDisplayScale = 3.000000,
  _UITraitNameHorizontalSizeClass = Regular,
  _UITraitNameVerticalSizeClass = Compact, 
  _UITraitNameTouchLevel = 0, _UITraitNameInteractionModel = 1&gt;
  </code></pre>
  
  <p><strong>iPhone 6+ launched in portrait, navigate to DetailViewController and rotateDevice</strong></p>
  
  <pre><code>&lt;UITraitCollection: 0x7fe76b7076e0; 
  _UITraitNameUserInterfaceIdiom = Phone, 
  _UITraitNameDisplayScale = 3.000000, 
  _UITraitNameHorizontalSizeClass = Compact, 
  _UITraitNameVerticalSizeClass = Compact, 
  _UITraitNameTouchLevel = 0, 
  _UITraitNameInteractionModel = 1&gt;
  </code></pre>
  
  <p>As you can see if the phone is launched already in landscape mode, the detailViewController has a different traitCollection compared to rotating the device when on the same viewController. Is this a simulator bug? Or is this expected behaviour? If so it doesn't make sense for the sizeClasses when designing your layout.</p>
  
  <p>** EDIT ** 
  I can confirm I see the same behaviour on a physical device</p>
  
  <p>thanks</p>