fix: thread message deletion

packages/stream_chat/CHANGELOG.md

@@ -19,6 +19,10 @@
 - Fixed `unreadCount` after removing user from a channel.
 - Added `client.queryBannedUsers`, `channel.queryBannedUsers` endpoint for querying banned users.
 
+🐞 Fixed
+
+- [[#871]](https://github.com/GetStream/stream-chat-flutter/issues/871) Fixed thread message deletion.
+
 ## 3.3.1
 
 🐞 Fixed

packages/stream_chat/lib/src/client/channel.dart

@@ -1827,7 +1827,13 @@ class ChannelClientState {
       if (replyCount == null || replyCount == 0) return;
 
       addMessage(parentMessage.copyWith(replyCount: replyCount - 1));
-      updateThreadInfo(parentId, threads[parentId]!..remove(message));
+      updateThreadInfo(
+        parentId,
+        threads[parentId]!
+          ..removeWhere(
+            (e) => e.id == message.id,
+          ),
+      );
     } else {
       // Remove regular message
       final allMessages = [...messages];