From e84bf064adb567f1bed4ad6ea3c48575f2efabc3 Mon Sep 17 00:00:00 2001
From: snewcomer <snewcomer24@gmail.com>
Date: Sat, 24 Feb 2018 16:20:56 -0800
Subject: [PATCH] update rafLogic for scrollable area

---
 addon/mixins/in-viewport.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/addon/mixins/in-viewport.js b/addon/mixins/in-viewport.js
index 8ba40431..89f8da0e 100644
--- a/addon/mixins/in-viewport.js
+++ b/addon/mixins/in-viewport.js
@@ -107,7 +107,7 @@ export default Mixin.create({
       this.intersectionObserver = new IntersectionObserver(bind(this, this._onIntersection), options);
       this.intersectionObserver.observe(element);
     } else {
-      const height = scrollableArea ? scrollableArea.offsetHeight : window.innerHeight;
+      const height = scrollableArea ? scrollableArea.offsetHeight + scrollableArea.getBoundingClientRect().top: window.innerHeight;
       const width = scrollableArea ? scrollableArea.offsetWidth : window.innerWidth;
       const boundingClientRect = element.getBoundingClientRect();