clasificación – ¿Cómo ordenar los términos de taxonomía personalizados de WordPress por valor de campo meta en el panel de administración?

Hay una tarea en WordPress para que la taxonomía personalizada muestre los términos ordenados por el valor del metacampo en el formato DATETIME (Ymd H:i:s)

el campo meta se configura con el complemento ACF y todo está bien en la base de datos:

add_filter( 'get_terms_args', function ( $args, $taxonomies ) {

  global $pagenow;

  if ( is_admin() && $pagenow == 'edit-tags.php' && $taxonomies[0] == 'program_session' ) {
    $args['meta_query'] = [
      'relation' => 'AND',
      'conference' => [
        'key'       => 'conference_id',
        'value'     => get_active_conf_id(),
        'compare'   => 'LIKE'
      ],
      'session_start' => array(
        'key'     => 'program_session_start',
        'type' => 'DATETIME',
        'compare' => 'EXISTS',
        ),
    ];
    $args['orderby'] = 'session_start';
    $args['order'] = 'ASC';
  }

  return $args;

}, 10, 2 );

La condición de filtrado de conference_id funciona bien, pero la clasificación no.

Lo intenté así:

$term_query = new WP_Term_Query( [
  'taxonomy' => ['program_session'],
  'hide_empty'    => false,
  'meta_query' => [
    'relation' => 'AND',
    'conference' => [
      'key'       => 'conference_id',
      'value'     => get_active_conf_id(),
      'compare'   => 'LIKE'
    ],
    'session_start' => array(
      'key'     => 'program_session_start',
      'type' => 'DATETIME',
    ),
  ],
  'orderby' => 'session_start',
  'order' => 'ASC',
] );
echo '<pre>';
print_r($term_query->terms);

todo está ordenado correctamente:

Array
(
    [0] => WP_Term Object
        (
            [term_id] => 67
            [name] => Tasty breakfast
            [slug] => tasty-breakfast
            [term_group] => 0
            [term_taxonomy_id] => 67
            [taxonomy] => program_session
            How to sort WordPress custom taxonomy terms by meta field value in admin panel? => 
            [parent] => 0
            [count] => 0
            [filter] => raw
        )

    [1] => WP_Term Object
        (
            [term_id] => 65
            [name] => Good lunch
            [slug] => good-lunch
            [term_group] => 0
            [term_taxonomy_id] => 65
            [taxonomy] => program_session
            How to sort WordPress custom taxonomy terms by meta field value in admin panel? => 
            [parent] => 0
            [count] => 0
            [filter] => raw
        )

    [2] => WP_Term Object
        (
            [term_id] => 66
            [name] => Just dinner
            [slug] => and-just-dinner
            [term_group] => 0
            [term_taxonomy_id] => 66
            [taxonomy] => program_session
            How to sort WordPress custom taxonomy terms by meta field value in admin panel? => 
            [parent] => 0
            [count] => 0
            [filter] => raw
        )

)

resolvió temporalmente el problema de esta manera, ¡pero no es bonito!

add_filter( 'get_terms_args', function ( $args, $taxonomies ) {

  global $pagenow;

  if ( is_admin() && $pagenow == 'edit-tags.php' && $taxonomies[0] == 'program_session' ) {
    $args['menu_order'] = false;
    $args['ignore_term_order'] = false;
    $args['meta_query'] = [
      'conference' => [
        'key'       => 'conference_id',
        'value'     => get_active_conf_id(),
        'compare'   => 'LIKE'
      ],
    ];
  }

  return $args;

}, 10, 2 );

add_filter( 'terms_clauses', function ( $pieces, $taxonomies, $args ) {
    global $pagenow, $wpdb;
    if ( is_admin() && $pagenow == 'edit-tags.php' && $taxonomies[0] == 'program_session' ) {
        $pieces['join']  .= ' INNER JOIN ' . $wpdb->termmeta . ' AS tm ON t.term_id = tm.term_id ';
        $pieces['where'] .= ' AND tm.meta_key = "program_session_start"';
        $pieces['orderby']  = ' ORDER BY tm.meta_value ';
    }
    return $pieces;
}, 10, 3 );