From 4906b6aa235b07cb31915c18de3a9b0aafcef143 Mon Sep 17 00:00:00 2001
From: Justin Moore <jmoore@mm-mac-0894.local>
Date: Fri, 25 Mar 2016 17:55:33 -0500
Subject: [PATCH] Fix updates caused by item-recycler data splicing

---
 src/mm-item-recycler/mm-item-recycler.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/mm-item-recycler/mm-item-recycler.js b/src/mm-item-recycler/mm-item-recycler.js
index e7afce47..ba685bf8 100644
--- a/src/mm-item-recycler/mm-item-recycler.js
+++ b/src/mm-item-recycler/mm-item-recycler.js
@@ -234,17 +234,19 @@ found here: https://github.com/Polymer/core-list
 
 			at = this._recycler.getLowestIndex();
 
-			if (lower > at) {
+			if (at > -1 &&
+				lower > at) {
 				lower = at;
 			}
 
 			at = this._recycler.getHighestIndex();
 
-			if (upper < at) {
+			if (at > -1 &&
+				upper < at) {
 				upper = at;
 			}
 
-			if (lower < upper) {
+			if (upper < lower) {
 				return;
 			}