层次分类的编辑标签页面不显示所有深度的分类

我为我的公文包自定义帖子类型创建了一个名为“公文包类别”的分类法。它们是分级的，应该表现得像类别。当我编辑一篇文章时。。。我有一个元数据库，可以在其中分配适当的投资组合类别。它显示所有深度的所有类别。

unlimited hierarchy

但是当我在分类页面上（编辑tags.php？Taxonomy=portfolio cat&post\\u type=portfolio）时，它只显示顶级类别及其直接子类别。。。再也没有了。因此，孙子级别的类别缺失，即使有分配给它们的投资组合条目。

limited hierarchy

这是默认行为吗？b/c我可以在常规类别页面上看到无限深度。层次分类法的行为应该相同吗？

/*
 * Builds the a tag taxonomies
 */

function create_portfolio_taxonomies() {
// Add new taxonomy, make it hierarchical (like categories)
  $labels = array(
    \'name\' => _x( \'Portfolio Categories\', \'taxonomy general name\' ),
    \'singular_name\' => _x( \'Portfolio Category\', \'taxonomy singular name\' ),
    \'search_items\' =>  __( \'Search Portfolio Categories\' ),
    \'all_items\' => __( \'All Portfolio Categories\' ),
    \'parent_item\' => __( \'Parent Portfolio Category\' ),
    \'parent_item_colon\' => __( \'Parent Portfolio Category:\' ),
    \'edit_item\' => __( \'Edit Portfolio Category\' ), 
    \'update_item\' => __( \'Update Portfolio Category\' ),
    \'add_new_item\' => __( \'Add New Portfolio Category\' ),
    \'new_item_name\' => __( \'New Portfolio Category Name\' ),
    \'menu_name\' => __( \'Portfolio Categories\' ),
  );    

    register_taxonomy( \'portfolio-cats\', array(\'portfolio\'), 
        array( 
            \'hierarchical\' => true, 
            \'labels\' => $labels, 
            \'rewrite\' => array( \'slug\' => \'portfolio\',\'with_front\' => true, \'hierarchical\' => true  ),
        ) );

    //preset some categories
    my_add_term($postID,\'portfolio-cats\',\'Print\');  
    my_add_term($postID,\'portfolio-cats\',\'Digital\');

}
add_action( \'init\', \'create_portfolio_taxonomies\', 0 );



function my_add_term($id, $tax, $term) {

    $term_id = intval(term_exists($term));
    if (!$term_id) {
        $term_id = wp_insert_term($term, $tax);
        $term_id = $term_id[\'term_id\'];
    }
    $result =  wp_set_object_terms($id, array($term_id), $tax, FALSE);

    return $result;
}

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