title: UITextView doesn't switch input toolbar to custom keyboard
body: <p>iOS9 Xcode7 beta6: I'm trying to switch between keyboards (custom/default) for <code>UITextView</code> by using <code>reloadInputViews()</code>. Changing <code>UIKeyboardType</code> and <code>UIKeyboardAppearance</code> by calling <code>reloadInputViews()</code> works perfectly. Also following code works well under iOS8.</p>
  
  <p>This implies that textView is already a first responder:</p>
  
  <pre><code>private func showCustomKeyboard() {
      textView.inputView = customKeyboardView
      textView.reloadInputViews()
  }
  
  private func showDefaultKeyboard() {
      textView.inputView = nil
      textView.reloadInputViews()
  }
  </code></pre>
  
  <p>Things like the following have made no effect and also they look like overkill:</p>
  
  <pre><code>textView.inputView.resignFirstResponder()
  textView.inputView.becomeFirstResponder()
  textView.inputView = customKeyboardView
  textView.reloadInputViews()
  </code></pre>
  
  <p>I found a couple of related questions on SO but no one of them doesn't have to do with iOS9 and as I said before it does work in iOS8.</p>
  
  <p>Have anyone come across this bug?</p>