From 9c0cc77e355fc73e4406761f7f2fdf0bf72ba89f Mon Sep 17 00:00:00 2001
From: Wang Qi <wangq8@outlook.com>
Date: Tue, 9 Jun 2026 13:06:58 +0800
Subject: [PATCH] Fix empty response set not take effect (#15824)

Fix empty response set not take effect
---
 web/src/hooks/logic-hooks.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/web/src/hooks/logic-hooks.ts b/web/src/hooks/logic-hooks.ts
index 961b6a7a69..1174cbe97d 100644
--- a/web/src/hooks/logic-hooks.ts
+++ b/web/src/hooks/logic-hooks.ts
@@ -279,7 +279,8 @@ export const useSendMessageWithSse = () => {
                 if (typeof d !== 'boolean') {
                   setAnswer((prev) => {
                     const prevAnswer = prev.answer || '';
-                    const currentAnswer = d.final ? '' : d.answer || '';
+                    const currentAnswer =
+                      d.final && prevAnswer ? '' : d.answer || '';
 
                     let newAnswer: string;
                     if (prevAnswer && currentAnswer.startsWith(prevAnswer)) {