Can't get field_rendered_body working

I am using the example code given on https://www.drupal.org/node/2180227:

/*
 * Implements hook_node_insert().
 */
function foo_node_insert($node) {

  $message = message_create('foo_message_type', array('uid' => $node->uid));

  $wrapper = entity_metadata_wrapper('message', $message);
  $wrapper->field_node_ref->set($node);

  $options = array(
     'rendered fields' => array(
       'message_notify_email_subject' => 'field_rendered_subject',
       'message_notify_email_body' => 'field_rendered_body',
     ),
  );

  message_notify_send_message($message, $options);
}

and it works fine for the message subject, but for some reason I can't get node body to be mailed properly. Tokens for for subject filed, but again body tokens always return empty.

I tried to see the content of the $node variable in the following code from example module:

  elseif (isset($message['params']['message_entity']->field_node_ref)) {
    // This is a node.
    $nid = $message['params']['message_entity']->field_node_ref[LANGUAGE_NONE][0]['target_id'];
    $node = node_load($nid);
    $messageid_params['uid'] = $node->uid;
    $messageid_params['nid'] = $node->nid;
    $messageid_params['cid'] = 0;
    $messageid_params['time'] = $node->created;
    if (variable_get('mailcomment_alter_subjects', 1)) {
      $subject = $message['subject'];
      $subject = variable_get('site_name', '') ? '[' . variable_get('site_name', '') . '] ' . $node->title : $subject;
      $message['subject'] = $subject;
    }
    dpm($node);
   }

and unfortunately my custom node body field returns empty:

field_description (Array, 0 elements)
$...->field_description

I wonder is this because the above code is trigerred while the node has not been saved yet? But then how can I make Message module to send node body?