Fix: Only override tmp store key

src/Plugin/SectionStorage/UserDashboardSectionStorage.php

@@ -106,7 +106,9 @@ class UserDashboardSectionStorage extends DashboardSectionStorage implements Tem
      * @var \Drupal\dashboards\Entity\Dashboard $entity
      */
     if ($id && ($entity = $this->entityTypeManager->getStorage('dashboard')->load($id))) {
-      $entity->loadOverrides();
+      if ($entity->isOverriden()) {
+        $entity->loadOverrides();
+      }
       $contexts[Dashboard::CONTEXT_TYPE] = EntityContext::fromEntity($entity);
     }
     return $contexts;