diff --git a/frontend/lib/registry/components/v2-split-panel-layout/SplitPanelLayoutComponent.tsx b/frontend/lib/registry/components/v2-split-panel-layout/SplitPanelLayoutComponent.tsx
index 0b2002f9..8467154a 100644
--- a/frontend/lib/registry/components/v2-split-panel-layout/SplitPanelLayoutComponent.tsx
+++ b/frontend/lib/registry/components/v2-split-panel-layout/SplitPanelLayoutComponent.tsx
@@ -2547,7 +2547,7 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
         return;
       }
 
-      if (onUpdateComponent) {
+      if (isDesignMode && onUpdateComponent) {
         // 디자인 모드: config에 영구 저장
         const rightPanel = componentConfig.rightPanel || {};
         if (source === "main") {
@@ -2633,6 +2633,7 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
       componentConfig,
       component,
       onUpdateComponent,
+      isDesignMode,
       handleRightColumnDragEnd,
       setRuntimeColumnOrder,
     ],