From 949dca72da09ac77fc7368aaae27b52b778c75df Mon Sep 17 00:00:00 2001
From: Matthew <matthewzmd@gmail.com>
Date: Sat, 8 Feb 2020 16:10:19 -0500
Subject: [PATCH] Improve isElementOnTop algorithm

---
 core/js/get_markers.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/js/get_markers.js b/core/js/get_markers.js
index bfecbb3..3cd984a 100644
--- a/core/js/get_markers.js
+++ b/core/js/get_markers.js
@@ -36,8 +36,8 @@
     }
 
     function isElementOnTop(element, rect){
-        let topElement = document.elementFromPoint(rect[1], rect[0]);
-        return element.isSameNode(topElement) || element.contains(topElement) || topElement.contains(element);
+        let topElement = document.elementFromPoint((rect[1] + rect[2])/2, (rect[0] + rect[3])/2);
+        return topElement != undefined && (element.isSameNode(topElement) || element.contains(topElement) || topElement.contains(element));
     }
 
     function hasCopy(validRects, rect){