diff --git a/core/lib/Drupal/Core/Render/Element/Actions.php b/core/lib/Drupal/Core/Render/Element/Actions.php
index 971b55b..2e75165 100644
--- a/core/lib/Drupal/Core/Render/Element/Actions.php
+++ b/core/lib/Drupal/Core/Render/Element/Actions.php
@@ -32,16 +32,12 @@ class Actions extends Container {
   public function getInfo() {
     $class = get_class($this);
     return [
-      '#optional' => FALSE,
       '#process' => [
         // @todo Move this to #pre_render.
         [$class, 'preRenderActionsDropbutton'],
         [$class, 'processActions'],
         [$class, 'processContainer'],
       ],
-      '#pre_render' => [
-        [$class, 'preRenderContainer'],
-      ],
       '#weight' => 100,
       '#theme_wrappers' => ['container'],
     ];
diff --git a/core/lib/Drupal/Core/Render/Element/Container.php b/core/lib/Drupal/Core/Render/Element/Container.php
index 23f951a..357e6a5 100644
--- a/core/lib/Drupal/Core/Render/Element/Container.php
+++ b/core/lib/Drupal/Core/Render/Element/Container.php
@@ -89,7 +89,7 @@ public static function processContainer(&$element, FormStateInterface $form_stat
   /**
    * Prevents optional containers from rendering if they have no children.
    *
-   * @param $element
+   * @param array $element
    *   An associative array containing the properties and children of the
    *   container.
    *