diff --git a/Classes/Domain/Model/Feedback/Operations/ReloadContentOutOfBand.php b/Classes/Domain/Model/Feedback/Operations/ReloadContentOutOfBand.php
index 019504574b..ba1102a772 100644
--- a/Classes/Domain/Model/Feedback/Operations/ReloadContentOutOfBand.php
+++ b/Classes/Domain/Model/Feedback/Operations/ReloadContentOutOfBand.php
@@ -147,7 +147,11 @@ protected function renderContent(ControllerContext $controllerContext): string|R
                 $view->assign('value', $this->node);
                 $view->setRenderingEntryPoint($this->nodeDomAddress->getFusionPathForContentRendering());
 
-                return $view->render();
+                $result = $view->render();
+
+                return (is_string($result) || $result instanceof ResponseInterface)
+                    ? $result
+                    : '';
             }
         }
 
diff --git a/Classes/Domain/Model/Feedback/Operations/RenderContentOutOfBand.php b/Classes/Domain/Model/Feedback/Operations/RenderContentOutOfBand.php
index d5714f8641..9737f78c5c 100644
--- a/Classes/Domain/Model/Feedback/Operations/RenderContentOutOfBand.php
+++ b/Classes/Domain/Model/Feedback/Operations/RenderContentOutOfBand.php
@@ -196,7 +196,11 @@ protected function renderContent(ControllerContext $controllerContext): string|R
                 $view->assign('value', $parentNode);
                 $view->setRenderingEntryPoint($parentDomAddress->getFusionPath());
 
-                return $view->render();
+                $result = $view->render();
+
+                return (is_string($result) || $result instanceof ResponseInterface)
+                    ? $result
+                    : '';
             }
         }