diff -u b/core/lib/Drupal/Core/Entity/EntityRepository.php b/core/lib/Drupal/Core/Entity/EntityRepository.php
--- b/core/lib/Drupal/Core/Entity/EntityRepository.php
+++ b/core/lib/Drupal/Core/Entity/EntityRepository.php
@@ -63,17 +63,16 @@
    */
   public function loadEntitiesByUuids($entity_type_id, $uuids) : array {
     $entity_type = $this->entityTypeManager->getDefinition($entity_type_id);
-
     if (!$uuid_key = $entity_type->getKey('uuid')) {
       throw new EntityStorageException("Entity type $entity_type_id does not support UUIDs.");
     }
-
-    $entities_by_id = $this->entityTypeManager->getStorage($entity_type_id)->loadByProperties([$uuid_key => $uuids]);
     $entities = [];
-    foreach ($entities_by_id as $entity) {
-      $entities[$entity->uuid()] = $entity;
+    foreach ($uuids as $ukey => $uuid_value) {
+      $key_value = '';
+      $entities_by_id = $this->entityTypeManager->getStorage($entity_type_id)->loadByProperties([$uuid_key => $uuid_value]);
+      $key_value = array_keys($entities_by_id)[0];
+      $entities[$entities_by_id[$key_value]->uuid()] = $entities_by_id[$key_value];
     }
-
     return $entities;
   }