Fix read receipt sending behaviour around thread roots (#3600)

* Fix read receipt sending behaviour around thread roots * Update src/client.ts Co-authored-by: Eric Eastwood <[email protected]> --------- Co-authored-by: Eric Eastwood <[email protected]>
matrix-org · Jul 13, 2023 · b05f933 · b05f933
1 parent b186d79
commit b05f933
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/client.ts b/src/client.ts
@@ -5000,9 +5000,11 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
         });
 
         if (!unthreaded) {
-            const isThread = !!event.threadRootId;
+            // A thread cannot be just a thread root and a thread root can only be read in the main timeline
+            const isThread = !!event.threadRootId && !event.isThreadRoot;
             body = {
                 ...body,
+                // Only thread replies should define a specific thread. Thread roots can only be read in the main timeline.
                 thread_id: isThread ? event.threadRootId : MAIN_ROOM_TIMELINE,
             };
         }