From d067ee1c5a73bd71e0d054483f8140f623e946f1 Mon Sep 17 00:00:00 2001
From: Robin Ward <robin.ward@gmail.com>
Date: Tue, 26 Oct 2021 14:53:49 -0400
Subject: [PATCH] UX: Never show back button if less than current position

---
 app/assets/javascripts/discourse/app/widgets/topic-timeline.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/assets/javascripts/discourse/app/widgets/topic-timeline.js b/app/assets/javascripts/discourse/app/widgets/topic-timeline.js
index f5b67655d5f..310a8a346c6 100644
--- a/app/assets/javascripts/discourse/app/widgets/topic-timeline.js
+++ b/app/assets/javascripts/discourse/app/widgets/topic-timeline.js
@@ -225,10 +225,11 @@ createWidget("timeline-scrollarea", {
 
     let showButton = false;
     const hasBackPosition =
+      position.lastRead &&
       position.lastRead > 3 &&
+      position.lastRead > position.current &&
       Math.abs(position.lastRead - position.current) > 3 &&
       Math.abs(position.lastRead - position.total) > 1 &&
-      position.lastRead &&
       position.lastRead !== position.total;
 
     if (hasBackPosition) {