title: Strange behaviour for IOS 6 rotation
body: <p>I have search the net and in the forum for two weeks. I couldn't find anything like my problem.
  I have an app build on the IOS 3 and in time I made it compatible with all IOS versions.
  All the app is in portrait mode and I only have one screen (a chart) which is in landscape mode. Until IOS 5 and IOS 5 also I get the beautiful rect with black edges when rotating.
  On IOS 6 I see that after I rotate I get the chart Nib is being presented from the top right corner. (I can't post an image or a video to demonstrate it as it has a logo and I'm not sure it's allowed.</p>
  
  <p>I am using setRootViewController at the beginning.</p>
  
  <p>I attached a sketch to demonstrate.<img src="https://i.stack.imgur.com/MCwGa.jpg" alt="enter image description here"></p>
  
  <p>How can I retrieve the right animation?  </p>