diff --git a/core/lib/Drupal/Core/Entity/Entity/EntityViewDisplay.php b/core/lib/Drupal/Core/Entity/Entity/EntityViewDisplay.php
index 57041e9..51a0c0d 100644
--- a/core/lib/Drupal/Core/Entity/Entity/EntityViewDisplay.php
+++ b/core/lib/Drupal/Core/Entity/Entity/EntityViewDisplay.php
@@ -109,7 +109,9 @@ public static function collectRenderDisplays($entities, $view_mode) {
     foreach ($bundles as $bundle) {
       // Use the selected display if any, or create a fresh runtime object.
       if (isset($load_ids[$bundle])) {
-        $display = $displays[$load_ids[$bundle]];
+        // The display might be altered during the request, clone to so that
+        // those changes will not affect anything else.
+        $display = clone $displays[$load_ids[$bundle]];
       }
       else {
         $display = $storage->create(array(