From 182a4fd31226794e22682402045ee0c856bf3675 Mon Sep 17 00:00:00 2001
From: Alexander Zinchuk <alx.zinchuk@gmail.com>
Date: Mon, 30 Jan 2023 15:55:50 +0100
Subject: [PATCH] Pinned Messages: Fix initialization error on page reload
 (#2431)

---
 src/components/middle/MessageList.tsx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/components/middle/MessageList.tsx b/src/components/middle/MessageList.tsx
index c7ed50aa2..d6c83a616 100644
--- a/src/components/middle/MessageList.tsx
+++ b/src/components/middle/MessageList.tsx
@@ -244,7 +244,9 @@ const MessageList: FC<OwnProps & StateProps> = ({
     }
 
     const listedMessages = viewportIds.map((id) => messagesById[id]).filter(Boolean);
-    return groupMessages(orderBy(listedMessages, ['date', 'id']), memoUnreadDividerBeforeIdRef.current);
+    return listedMessages.length
+      ? groupMessages(orderBy(listedMessages, ['date', 'id']), memoUnreadDividerBeforeIdRef.current)
+      : undefined;
   }, [messageIds, messagesById, threadFirstMessageId, threadTopMessageId]);
 
   useInterval(() => {