From b31a1e8be6c43b95d4f14006fb5bd636b3520b55 Mon Sep 17 00:00:00 2001
From: Alex Fedosov <alex@fedosov.me>
Date: Tue, 9 Jun 2015 21:19:32 +0600
Subject: [PATCH] fix GridLayer move event handler, fixes #3522

---
 src/layer/tile/GridLayer.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/layer/tile/GridLayer.js b/src/layer/tile/GridLayer.js
index fca852df..99f13ad7 100644
--- a/src/layer/tile/GridLayer.js
+++ b/src/layer/tile/GridLayer.js
@@ -104,7 +104,11 @@ L.GridLayer = L.Layer.extend({
 
 		if (!this.options.updateWhenIdle) {
 			// update tiles on move, but not more often than once per given interval
-			events.move = L.Util.throttle(this._onMoveEnd, this.options.updateInterval, this);
+			if (!this._onMove) {
+				this._onMove = L.Util.throttle(this._onMoveEnd, this.options.updateInterval, this);
+			}
+
+			events.move = this._onMove;
 		}
 
 		if (this._zoomAnimated) {