title: UIWindow endDisablingInterfaceAutorotationAnimated error appears in console when keyboard is dismissed interactively from collectionView in iOS9 only
body: <p>I am getting this strange error in iOS 9 only:</p>
  <pre><code>[UIWindow endDisablingInterfaceAutorotationAnimated:] called on UITextEffectsWindow: ...without matching
  -beginDisablingInterfaceAutorotation. Ignoring.
  </code></pre>
  <p>Anytime I dismiss the keyboard interactively by dragging down from within my collectionView. I don't get the error by dismissing the keyboard with a tap gesture or pressing enter. It is very frustrating. Even if I don't observe any keyboard notifications, I still get this error on this interactive keyboard dismissal. I wonder if anybody else has come across this error and found a solution. I have an <code>inputAccessoryView</code> consisting of a textView mounted on the keyboard.</p>