From c8dd7b42e717688073213502d1eafe4892b9e77d Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@matrix.org>
Date: Tue, 13 Oct 2020 13:10:35 +0200
Subject: [PATCH] encountered this very unlikely race while testing, so prevent
 it

---
 src/matrix/room/timeline/Timeline.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/matrix/room/timeline/Timeline.js b/src/matrix/room/timeline/Timeline.js
index 6247b4c7..8cad17a1 100644
--- a/src/matrix/room/timeline/Timeline.js
+++ b/src/matrix/room/timeline/Timeline.js
@@ -75,6 +75,9 @@ export class Timeline {
     
     // tries to prepend `amount` entries to the `entries` list.
     async loadAtTop(amount) {
+        if (this._disposables.isDisposed) {
+            return;
+        }
         const firstEventEntry = this._remoteEntries.array.find(e => !!e.eventType);
         if (!firstEventEntry) {
             return;