Fixed the assignment of the fullScreenTarget so FS mode works again now.

Author: photonstorm

src/core/ScaleManager.js

@@ -121,7 +121,7 @@ Phaser.ScaleManager = function (game, width, height) {
     * Note that if you use a scale property of EXACT_FIT then fullScreenTarget will have its width and height style set to 100%.
     * @property {any} fullScreenTarget
     */
-    this.fullScreenTarget = this.game.canvas;
+    this.fullScreenTarget = null;
 
     /**
     * @property {Phaser.Signal} enterFullScreen - The event that is dispatched when the browser enters full screen mode (if it supports the FullScreen API).
@@ -413,6 +413,9 @@ Phaser.ScaleManager.prototype = {
     */
     boot: function () {
 
+        //  Now the canvas has been created we can target it
+        this.fullScreenTarget = this.game.canvas;
+
         var _this = this;
 
         this._checkOrientation = function(event) {