title: Problem popping to root nav controller on tab bar switch
body: <p>Trying to mimic/copy the built-in address book, specifically the behavior when editing a contact or viewing an existing contact's Info from inside the Phone app. When you navigate to another tab, the editing state is reset and the "New Contact" or "Info" view is popped so that when you come back to the Contacts tab, you are back at the root table view.</p>
  
  <p>I have most of this working inside viewWillDisappear using setEditing: and popToViewController: however I get strange behavior when the user navigates from the Info view to the table view using the back button. Even if I pop to the root table view controller, it seems to be using the default UITableViewController class and not my subclass (e.g. standard selection behaviors instead of my overrides to push the detail view.)</p>
  
  <p>Any hints? IPD</p>
  
  <p>Here's some code to illustrate:</p>
  
  <pre><code>- (void)viewWillDisappear:(BOOL)animated {
      [super viewWillDisappear:animated];
  
      // This is to clean up from the colored bar in detail view
      self.navigationController.navigationBar.tintColor = nil;
  
      // These are to match the behaviour of Contacts app
      [self setEditing:NO animated:NO];
  
      // This is the tricky part: works when switching tabs, but not when back button was going to pop anyway!!
      [self.navigationController popToViewController:rootViewControllerForTab animated:NO];
  }
  </code></pre>