From 3e1b830caad2cb713a820ecc47d3bc99370a2e0e Mon Sep 17 00:00:00 2001
From: openclaw-agent <agent@pascal.app>
Date: Sun, 21 Jun 2026 04:07:31 +0000
Subject: [PATCH] fix(nodes): guard previewRef in fence tool onGridClick
 (Sentry MONOREPO-EDITOR-BE/CR)

---
 packages/nodes/src/fence/tool.tsx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/nodes/src/fence/tool.tsx b/packages/nodes/src/fence/tool.tsx
index 53b1a8b6d..d9428380b 100644
--- a/packages/nodes/src/fence/tool.tsx
+++ b/packages/nodes/src/fence/tool.tsx
@@ -552,6 +552,7 @@ export const FenceTool: React.FC = () => {
     }
 
     const onGridClick = (event: GridEvent) => {
+      if (!previewRef.current) return
       if (buildingState.current === 1 && event.nativeEvent.detail >= 2) {
         stopDrafting()
         return