diff --git a/web/app/components/workflow/index.tsx b/web/app/components/workflow/index.tsx
index ce150703a43..6572c01723e 100644
--- a/web/app/components/workflow/index.tsx
+++ b/web/app/components/workflow/index.tsx
@@ -422,7 +422,7 @@ export const Workflow: FC<WorkflowProps> = memo(({
       <CandidateNode />
       <CommentManager />
       <div
-        className='pointer-events-none absolute left-0 top-0 z-10 flex w-12 items-center justify-center p-1 pl-2'
+        className='pointer-events-none absolute left-0 top-0 z-[70] flex w-12 items-center justify-center p-1 pl-2'
         style={{ height: controlHeight }}
       >
         <Control />