diff --git a/core/modules/system/src/Plugin/Block/SystemMenuBlock.php b/core/modules/system/src/Plugin/Block/SystemMenuBlock.php
index 16af329..3d96855 100644
--- a/core/modules/system/src/Plugin/Block/SystemMenuBlock.php
+++ b/core/modules/system/src/Plugin/Block/SystemMenuBlock.php
@@ -128,6 +128,14 @@ public static function processMenuLevelParents(&$element, FormStateInterface $fo
   /**
    * {@inheritdoc}
    */
+  public function blockSubmit($form, FormStateInterface $form_state) {
+    $this->configuration['level'] = $form_state->getValue('level');
+    $this->configuration['depth'] = $form_state->getValue('depth');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public function build() {
     $menu_name = $this->getDerivativeId();
     $parameters = $this->menuTree->getCurrentRouteMenuTreeParameters($menu_name);