From 2ccbe341e2fc8d33591f595c7c7b8fbe8027b3c9 Mon Sep 17 00:00:00 2001
From: zubiden <19638254+zubiden@users.noreply.github.com>
Date: Sun, 22 Feb 2026 23:42:57 +0100
Subject: [PATCH] Chat: Fix missing thread info in update (#6648)

---
 src/api/gramjs/methods/chats.ts | 6 ++++++
 src/global/actions/api/chats.ts | 3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/api/gramjs/methods/chats.ts b/src/api/gramjs/methods/chats.ts
index 9e41fc095..7cf721e94 100644
--- a/src/api/gramjs/methods/chats.ts
+++ b/src/api/gramjs/methods/chats.ts
@@ -523,6 +523,7 @@ export async function requestChatUpdate({
   const chatUpdate = buildApiChatFromDialog(dialog, peerEntity);
 
   const readState = buildThreadReadState(dialog);
+  const threadInfo = buildApiThreadInfoFromDialog(chat.id, dialog);
   sendApiUpdate({
     '@type': 'updateThreadReadState',
     chatId: id,
@@ -530,6 +531,11 @@ export async function requestChatUpdate({
     readState,
   });
 
+  sendApiUpdate({
+    '@type': 'updateThreadInfo',
+    threadInfo,
+  });
+
   sendApiUpdate({
     '@type': 'updateChat',
     id,
diff --git a/src/global/actions/api/chats.ts b/src/global/actions/api/chats.ts
index f2db7e6b1..15f2b417d 100644
--- a/src/global/actions/api/chats.ts
+++ b/src/global/actions/api/chats.ts
@@ -237,13 +237,14 @@ addActionHandler('openChat', (global, actions, payload): ActionReturnType => {
   }
 
   const chat = selectChat(global, id);
+  const threadInfo = selectThreadInfo(global, id, MAIN_THREAD_ID);
   const chatReadState = selectThreadReadState(global, id, MAIN_THREAD_ID);
 
   if (chatReadState?.hasUnreadMark) {
     actions.markChatRead({ id });
   }
 
-  const isChatOnlySummary = !selectChatLastMessageId(global, id);
+  const isChatOnlySummary = !threadInfo || !selectChatLastMessageId(global, id);
 
   if (!chat) {
     if (selectIsChatWithSelf(global, id)) {