我有一个自定义的帖子类型。看起来面包屑为插入的父页面（不存在）提供了额外的空间。你可以在我所附的图片中看到这一点。

导致这个额外的、不存在的父级的自定义帖子类型发生了什么？

以下是我的自定义页面类型：

add_action( \'init\', \'register_cpt_result\' );

function register_cpt_result() {

    $labels = array( 
        \'name\' => _x( \'Case Results\', \'result\' ),
        \'singular_name\' => _x( \'Result\', \'result\' ),
        \'add_new\' => _x( \'Add New\', \'result\' ),
        \'add_new_item\' => _x( \'Add New Result\', \'result\' ),
        \'edit_item\' => _x( \'Edit Result\', \'result\' ),
        \'new_item\' => _x( \'New Result\', \'result\' ),
        \'view_item\' => _x( \'View Result\', \'result\' ),
        \'search_items\' => _x( \'Search Case Results\', \'result\' ),
        \'not_found\' => _x( \'No case results found\', \'result\' ),
        \'not_found_in_trash\' => _x( \'No case results found in Trash\', \'result\' ),
        \'parent_item_colon\' => _x( \'Parent Result:\', \'result\' ),
        \'menu_name\' => _x( \'Case Results\', \'result\' ),
    );

    $args = array( 
        \'labels\' => $labels,
        \'hierarchical\' => true,
        \'description\' => \'My firm\\\'s case results\',
        \'supports\' => array( \'title\', \'editor\', \'excerpt\' ),
        \'public\' => true,
        \'show_ui\' => true,
        \'show_in_menu\' => true,


        \'show_in_nav_menus\' => true,
        \'publicly_queryable\' => true,
        \'exclude_from_search\' => true,
        \'has_archive\' => true,
        \'query_var\' => true,
        \'can_export\' => true,
        \'rewrite\' => true,
        \'capability_type\' => \'post\'
    );

    register_post_type( \'result\', $args );
}

function crumbs() {
    if ((is_page() && ! is_category()) || is_archive() || is_single() || is_single()) {
        $crumbs = \'\';
        $crumbs .= \'<div class="crumbs"><span xmlns:v="http://rdf.data-vocabulary.org/#">\';
        $crumbs .= \'<span typeof="v:Breadcrumb"><a rel="v:url" property="v:title" href="\'.get_bloginfo(\'url\').\'">Home</a></span>\';
        $post_ancestors = get_post_ancestors($post);

        if ($post_ancestors) {
            $post_ancestors = array_reverse($post_ancestors);
            foreach ($post_ancestors as $crumb)
                $crumbs .= \'<span typeof="v:Breadcrumb"><a rel="v:url" property="v:title" href="\'.get_permalink($crumb).\'">\'.get_the_title($crumb).\'</a></span>\';
        }
        if (is_category() || is_single()) {
            $category = get_the_category();
            $crumbs .= \'<span typeof="v:Breadcrumb"><a rel="v:url" property="v:title" href="\'.get_category_link($category[0]->cat_ID).\'">\'.$category[0]->cat_name.\'</a></span>\';
        }
        if (!is_category())
            $crumbs .= \'<span typeof="v:Breadcrumb"><span class="crumbs-last" property="v:title">\'.get_the_title().\'</span></span>\';
        $crumbs .= \'</span></div>\';
        $close_crumb = \'</span>\';
        $open_crumb = \'<span typeof="v:Breadcrumb">\';
        $separator = \'<span class="separator">→</span>\';
        echo str_replace($close_crumb.$open_crumb, $close_crumb.$separator.$open_crumb, $crumbs);
    }
}