False report for stdClass type hint: Expected "object" but found "stdClass" for parameter type

Example:

  /**
   * If banners decorator mode is on, decorates the node content with banners.
   *
   * @param stdClass $node
   *   The node to decorate.
   * @param string $view_mode
   *   The node display mode.
   */
  static public function addBannersDecoratorToNode(stdClass &$node, $view_mode) {

Gives Coder error report:

 Expected "object" but found "stdClass" for parameter type

In fact if you use 'object' as the type hint with PHP5.3 as far as I can tell it crashes:

Recoverable fatal error: Argument 1 passed to Drupal\flagplus\banner\BannerHelper::addBannersDecoratorToNode() must be an instance of Drupal\flagplus\banner\object, instance of stdClass given