title: UITextField keyboard dismissal behaviour different in iOS 6
body: <p>I have some simple code that moves the 'firstResponder' between UITextFields by calling 'becomeFirstResponder' on each field in turn.</p>
  
  <p>In iOS 5, the keyboard is shown as constantly, until the final textfield where resignFirstResponder is shown.</p>
  
  <p>However, in iOS 6, the keyboard performs the dismiss and reappear animation each time the first responder is moved.  At no point do I call resignFirstResponder when calling becomeFirstResponder to move the responder (or in any of the associated methods) - it just seems to be new default behaviour in iOS 6.</p>
  
  <p>This is distracting, and unwanted.</p>
  
  <p>I've looked through the Apple documentation, and can't find any mention of a change to how the keyboard animation is managed.</p>
  
  <p>Can anyone refer me to documentation of these changes?  Thanks.</p>