From bb013ef29ea5b98ee83edc96235da716a16ccba2 Mon Sep 17 00:00:00 2001
From: Ajay Bura <32841439+ajbura@users.noreply.github.com>
Date: Mon, 17 Aug 2026 14:59:55 +0530
Subject: [PATCH] jump to latest using empty timeline and back pagination to
 prevent live message lost

---
 src/client/room/ThreadTimeline.ts       |  9 +--------
 src/client/room/Timeline.ts             | 11 +----------
 src/client/room/TimelineBatchManager.ts |  4 ++++
 3 files changed, 6 insertions(+), 18 deletions(-)

diff --git a/src/client/room/ThreadTimeline.ts b/src/client/room/ThreadTimeline.ts
index 582247be..3cd05844 100644
--- a/src/client/room/ThreadTimeline.ts
+++ b/src/client/room/ThreadTimeline.ts
@@ -288,15 +288,8 @@ export class ThreadTimeline implements TimelineView, Disposable {
       this.range.setRange(MessageRange.atLiveEnd(this.batch.read.size));
       return;
     }
-    const [err, result] = await this.getMessages(undefined, 'b', 80);
 
-    if (err) {
-      throw new Error(printMatrixError(err));
-    }
-
-    const { next_batch: prevToken, prev_batch: endToken, chunk } = result;
-    const messageEvents: MessageEventWithoutRoomId[] = this.relations.pickAndFilter(chunk);
-    this.batchManager.loadEvents(messageEvents, prevToken, endToken);
+    this.batchManager.reload(MessageBatch.emptyAtForwardEnd());
   }
 
   public findEvent(eventId: string): MessageEventWithoutRoomId | undefined {
diff --git a/src/client/room/Timeline.ts b/src/client/room/Timeline.ts
index b98a82c7..f3f63468 100644
--- a/src/client/room/Timeline.ts
+++ b/src/client/room/Timeline.ts
@@ -281,17 +281,8 @@ export class Timeline implements TimelineView, Disposable {
       this.range.setRange(MessageRange.atLiveEnd(this.batch.read.size));
       return;
     }
-    const [err, result] = await this.getMessages(undefined, 'b', 80);
 
-    if (err) {
-      throw new Error(printMatrixError(err));
-    }
-
-    const { end: prevToken, start: endToken, chunk } = result;
-    const messageEvents: MessageEventWithoutRoomId[] = this.relations.pickAndFilter(chunk);
-
-    this.pickThreads(messageEvents);
-    this.batchManager.loadEvents(messageEvents, prevToken, endToken);
+    this.batchManager.reload(MessageBatch.emptyAtForwardEnd());
   }
 
   public findEvent(eventId: string): MessageEventWithoutRoomId | undefined {
diff --git a/src/client/room/TimelineBatchManager.ts b/src/client/room/TimelineBatchManager.ts
index 61203c00..61a72a82 100644
--- a/src/client/room/TimelineBatchManager.ts
+++ b/src/client/room/TimelineBatchManager.ts
@@ -126,4 +126,8 @@ export class TimelineBatchManager {
 
     this.batch.publish(this.publishKey, newBatch);
   }
+
+  public reload(batch: MessageBatch) {
+    this.batch.publish(this.publishKey, batch);
+  }
 }