From a116185e8379c1ac3f5bf5b38576acfbd62b4c27 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Sun, 5 Dec 2021 00:22:56 +0300
Subject: [PATCH] Ensure that all messages after last_added_message_id are
 connected.

---
 td/telegram/MessagesManager.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index f4e68faa0..eddcb4ebd 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -9220,6 +9220,11 @@ void MessagesManager::on_get_history(DialogId dialog_id, MessageId from_message_
     }
   }
 
+  if (from_the_end && last_added_message_id != last_received_message_id) {
+    CHECK(last_added_message_id < last_received_message_id);
+    delete_newer_server_messages_at_the_end(d, last_added_message_id);
+  }
+
   if (have_full_history) {
     d->have_full_history = true;
     on_dialog_updated(dialog_id, "set have_full_history 2");