From 525e2b1b3f4a8e768f1f3b13104acf03af260941 Mon Sep 17 00:00:00 2001
From: Toby Zerner <toby.zerner@gmail.com>
Date: Thu, 11 Jun 2015 18:40:21 +0930
Subject: [PATCH] Don't anchor scroll when the top of the page has been reached

---
 js/forum/src/components/post-stream.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/forum/src/components/post-stream.js b/js/forum/src/components/post-stream.js
index 35dd23f1d..d92229710 100644
--- a/js/forum/src/components/post-stream.js
+++ b/js/forum/src/components/post-stream.js
@@ -295,7 +295,7 @@ class PostStream extends mixin(Component, evented) {
     var redraw = () => {
       if (start < this.visibleStart || end > this.visibleEnd) return;
 
-      var anchorIndex = backwards ? this.visibleEnd - 1 : this.visibleStart;
+      var anchorIndex = backwards && $(window).scrollTop() > 0 ? this.visibleEnd - 1 : this.visibleStart;
       anchorScroll(this.$('.item[data-index='+anchorIndex+']'), () => m.redraw(true));
 
       this.unpause();