title: ios icarousel view's contentoffset is getting changed when view disappears for the first time
body: <p><img src="https://i.stack.imgur.com/LRAbU.png" alt="before changing tabs"><img src="https://i.stack.imgur.com/x8Uir.png" alt="after changing tabs">whenever <code>view disappears</code> for the first time, <code>contentview's</code> center changes. I have not written a single line in <code>viewWillappear</code> or <code>viewWillDisappear</code> or <code>viewDidAppear</code> or <code>viewDidDisappear</code>.
  Please help.. Thanks in advance...</p>