title: SplitView Controller portrait mode- Top button keeps shifting to right
body: <p>I am using SplitViewController in ipad. On a button click from detail view, I open a modalview which is in full screen mode. Whenever I dismiss the modal view, the button which displays the table view in portrait mode shifts to the right. </p>
  
  <p>If I continue the process of opening the modal view and dismissing it, it keeps moving to the right until it disappears to the right of the screen.</p>
  
  <p>Any idea why this is happening?</p>