From d9e4b7cc0f653476ffa599203f1dee118fb8d480 Mon Sep 17 00:00:00 2001
From: Wizou <11647984+wiz0u@users.noreply.github.com>
Date: Fri, 1 Aug 2025 00:17:12 +0200
Subject: [PATCH] CollectUsersChats: don't update usernames from min info (thx
 @riniba)

---
 src/Services.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Services.cs b/src/Services.cs
index bb536d2..a83eed6 100644
--- a/src/Services.cs
+++ b/src/Services.cs
@@ -29,7 +29,9 @@ namespace TL
 							if (!user.flags.HasFlag(User.Flags.min) || !_users.TryGetValue(user.id, out var prevUser) || prevUser.flags.HasFlag(User.Flags.min))
 								_users[user.id] = user;
 							else
-							{	// update previously full user from min user:
+							{   // update previously full user from min user:
+								// see https://github.com/tdlib/td/blob/master/td/telegram/UserManager.cpp#L2689
+								// and https://github.com/telegramdesktop/tdesktop/blob/dev/Telegram/SourceFiles/data/data_session.cpp#L515
 								const User.Flags updated_flags = (User.Flags)0x5DAFE000;
 								const User.Flags2 updated_flags2 = (User.Flags2)0x711;
 								// tdlib updated flags: deleted | bot | bot_chat_history | bot_nochats | verified | bot_inline_geo
@@ -53,7 +55,7 @@ namespace TL
 								if (user.lang_code != null)
 									prevUser.lang_code = user.lang_code;				// tdlib: updated if present ; tdesktop: ignored
 								prevUser.emoji_status = user.emoji_status;				// tdlib/tdesktop: updated
-								prevUser.usernames = user.usernames;					// tdlib: not updated ; tdesktop: updated
+								//prevUser.usernames = user.usernames;					// tdlib/tdesktop: not updated
 								if (user.stories_max_id > 0)
 									prevUser.stories_max_id = user.stories_max_id;		// tdlib: updated if > 0 ; tdesktop: not updated
 								prevUser.color = user.color;							// tdlib/tdesktop: updated