diff --git a/core/lib/Drupal/Core/Render/Renderer.php b/core/lib/Drupal/Core/Render/Renderer.php
index f26c477..357ee6a 100644
--- a/core/lib/Drupal/Core/Render/Renderer.php
+++ b/core/lib/Drupal/Core/Render/Renderer.php
@@ -367,10 +367,10 @@ protected function doRender(&$elements, $is_root_call = FALSE) {
         static::$stack->push(new BubbleableMetadata());
         $this->processPostRenderCache($elements);
         $post_render_additions = static::$stack->pop();
+        $elements['#post_render_cache'] = NULL;
         BubbleableMetadata::createFromRenderArray($elements)
           ->merge($post_render_additions)
           ->applyTo($elements);
-        $elements['#post_render_cache'] = $post_render_additions->postRenderCache;
       } while (!empty($elements['#post_render_cache']));
       if (static::$stack->count() !== 1) {
         throw new \LogicException('A stray drupal_render() invocation with $is_root_call = TRUE is causing bubbling of attached assets to break.');