diff --git a/components/canvas/CanvasWorkspace.tsx b/components/canvas/CanvasWorkspace.tsx
index dc65dd35f..f0bd05fe1 100644
--- a/components/canvas/CanvasWorkspace.tsx
+++ b/components/canvas/CanvasWorkspace.tsx
@@ -193,7 +193,7 @@ export function CanvasWorkspace() {
 
   const isPointOnNodeElement = useCallback((target: EventTarget | null) => {
     if (!(target instanceof HTMLElement)) return false;
-    return !!target.closest("[data-canvas-node-id]");
+    return !!target.closest("[data-canvas-node-id], [data-canvas-overlay]");
   }, []);
 
   const isEventFromCanvasContainer = useCallback((target: EventTarget | null) => {
@@ -808,7 +808,7 @@ export function CanvasWorkspace() {
 
       {/* 缩放控制器 */}
       {selectedImageNodes.length > 0 && (
-        <div className="absolute bottom-4 left-4 z-30">
+        <div className="absolute bottom-4 left-4 z-30" data-canvas-overlay>
           <Button
             variant="secondary"
             size="sm"
@@ -823,7 +823,10 @@ export function CanvasWorkspace() {
         </div>
       )}
 
-      <div className="absolute bottom-4 right-4 bg-background/80 backdrop-blur-sm rounded-lg flex items-center gap-1 px-1 py-1 shadow-sm border border-border/50">
+      <div
+        className="absolute bottom-4 right-4 bg-background/80 backdrop-blur-sm rounded-lg flex items-center gap-1 px-1 py-1 shadow-sm border border-border/50"
+        data-canvas-overlay
+      >
         <Button
           variant="ghost"
           size="icon"