Issue #3210684 by joachim, mikran, tobiasb: Put each entity type table into a details element on admin/config/regional/content-language

core/modules/language/src/Form/ContentLanguageSettingsForm.php

@@ -150,7 +150,7 @@ class ContentLanguageSettingsForm extends FormBase {
 
       $form['settings'][$entity_type_id] = [
         '#title' => $label,
-        '#type' => 'container',
+        '#type' => 'details',
         '#entity_type' => $entity_type_id,
         '#theme' => 'language_content_settings_table',
         '#bundle_label' => $entity_type->getBundleLabel() ?: $label,

core/modules/language/templates/language-content-settings-table.html.twig

@@ -12,5 +12,4 @@
  * @ingroup themeable
  */
 #}
-<h4>{{ title }}</h4>
 {{ build }}