How to autoexpand everything on a view translation edit form?

Question

To fully translate a view into one language I have to expand dozens of collapsed panels, most of them with only one or two subelements.

I've reported it here. But is there a quick workaround, like a module or setting that automatically expands all these panels?

I tried using hook_form_FORM_ID_alter but changing the #open value is ignored (note that it's a top-level Displays panel #open which is true by default):

 /**
 * Implements hook_form_FORM_ID_alter().
 */
function custom_admin_form_config_translation_edit_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
  foreach ($form['config_names'] as $key => $config_name) {
    if (substr( $key, 0, 1 ) !== '#') {
      $display = $config_name['display'];
      $display['#open'] = false;
    }
  }
}

Answer 1

It's set to closed at https://git.drupalcode.org/project/drupal/-/blob/8.9.x/core/modules/config_translation/src/FormElement/ListElement.php#L70

by

            '#open' => empty($base_key),

so I'll just add a patch to composer to change it to

            '#open' => true,