title: Pushed UIViewController appears on the screen but the buttons from the pushing view remains active
body: <p>I have an IOS application which has several views. In one of them I have a button action  that push another view that has several buttons that are not activated although the view appears in the screen. If I touch in an area that was part of the previous screen the control is passed to the previous view. </p>
  
  <p>I have checked the view controller and the view has the correct Owner. </p>
  
  <pre><code>- (IBAction)touchupinsideMenu:(id)sender {
      self.navigationItem.title=@"Menu";
      self.SubmenuViewControllerVIP=[[ SubmenuViewController alloc] initWithNibName:@"SubmenuViewController" bundle:nil];
      [self.navigationController pushViewController:self.SubmenuViewControllerVIP animated:YES];
  
  }
  </code></pre>
  
  <p>------------ EDITED -----------------------</p>
  
  <p>The pushed view is not responding to the buttons and the pushing view's buttons are still active although the view is shown in the screen. </p>
  
  <p>Any Idea?
  Thanks</p>