reverted:
--- b/core/lib/Drupal/Core/Template/TwigExtension.php
+++ a/core/lib/Drupal/Core/Template/TwigExtension.php
@@ -4,9 +4,7 @@
 
 use Drupal\Component\Utility\Html;
 use Drupal\Component\Render\MarkupInterface;
-use Drupal\Core\Cache\CacheableDependencyInterface;
 use Drupal\Core\Datetime\DateFormatterInterface;
-use Drupal\Core\Render\AttachmentsInterface;
 use Drupal\Core\Render\RenderableInterface;
 use Drupal\Core\Render\RendererInterface;
 use Drupal\Core\Routing\UrlGeneratorInterface;
@@ -412,8 +410,6 @@
       return NULL;
     }
 
-    $this->bubbleArgMetadata($arg);
-
     // Keep Twig_Markup objects intact to support autoescaping.
     if ($autoescape && ($arg instanceof \Twig_Markup || $arg instanceof MarkupInterface)) {
       return $arg;
@@ -466,24 +462,6 @@
     return $this->renderer->render($arg);
   }
 
-  protected function bubbleArgMetadata($arg) {
-    if ($arg instanceof CacheableDependencyInterface || $arg instanceof AttachmentsInterface) {
-      $arg_bubbleable = [];
-      if ($arg instanceof CacheableDependencyInterface) {
-        $arg_bubbleable['#cache']['contexts'] = $arg->getCacheContexts();
-        $arg_bubbleable['#cache']['tags'] = $arg->getCacheTags();
-        $arg_bubbleable['#cache']['max-age'] = $arg->getCacheMaxAge();
-      }
-      if ($arg instanceof AttachmentsInterface) {
-        $arg_bubbleable['#attached'] = $arg->getAttachments();
-      }
-      if ($arg_bubbleable) {
-        // @todo Inject the Renderer in https://www.drupal.org/node/2529438.
-        drupal_render($arg_bubbleable);
-      }
-    }
-  }
-
   /**
    * Wrapper around render() for twig printed output.
    *
@@ -526,7 +504,6 @@
     }
 
     if (is_object($arg)) {
-      $this->bubbleArgMetadata($arg);
       if ($arg instanceof RenderableInterface) {
         $arg = $arg->toRenderable();
       }