diff --git a/core/lib/Drupal/Core/Render/BubbleableMetadata.php b/core/lib/Drupal/Core/Render/BubbleableMetadata.php
index c201f61..0e41072 100644
--- a/core/lib/Drupal/Core/Render/BubbleableMetadata.php
+++ b/core/lib/Drupal/Core/Render/BubbleableMetadata.php
@@ -48,17 +48,8 @@ public function merge(CacheableMetadata $other) {
       else {
         $result->attached = static::mergeAttachments($this->attached, $other->attached);
       }
-
-      if (empty($this->postRenderCache)) {
-        $result->postRenderCache = $other->postRenderCache;
-      }
-      elseif (empty($other->postRenderCache)) {
-        $result->postRenderCache = $this->postRenderCache;
-      }
-      else {
-        $result->postRenderCache = NestedArray::mergeDeep($this->postRenderCache, $other->postRenderCache);
-      }
     }
+
     return $result;
   }