From 9adbf431ca50341dc38ec637180247db00c49696 Mon Sep 17 00:00:00 2001
From: Bart van den Eijnden <bartvde@opengeo.org>
Date: Mon, 7 Jan 2013 13:25:15 +0100
Subject: [PATCH] clear the grid when we change from singleTile mode true to
 false or vice versa, discussed change with @ahocevar see #821 for the details

---
 lib/OpenLayers/Layer/Grid.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/OpenLayers/Layer/Grid.js b/lib/OpenLayers/Layer/Grid.js
index ef8b41468f..9356a7c222 100644
--- a/lib/OpenLayers/Layer/Grid.js
+++ b/lib/OpenLayers/Layer/Grid.js
@@ -419,6 +419,7 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
         OpenLayers.Layer.HTTPRequest.prototype.addOptions.apply(this, arguments);
         if (this.map && singleTileChanged) {
             this.initProperties();
+            this.clearGrid();
             this.tileSize = this.options.tileSize;
             this.setTileSize();
             this.moveTo(null, true);