diff -ruN /Users/florianbusch/Downloads/typo3_src-7.5.0/typo3/sysext/rtehtmlarea/Resources/Public/JavaScript/HTMLArea/Editor/Toolbar.js typo3_src/typo3/sysext/rtehtmlarea/Resources/Public/JavaScript/HTMLArea/Editor/Toolbar.js
--- /Users/florianbusch/Downloads/typo3_src-7.5.0/typo3/sysext/rtehtmlarea/Resources/Public/JavaScript/HTMLArea/Editor/Toolbar.js	2015-09-29 14:30:28.000000000 +0200
+++ typo3_src/typo3/sysext/rtehtmlarea/Resources/Public/JavaScript/HTMLArea/Editor/Toolbar.js	2015-11-12 12:52:55.000000000 +0100
@@ -28,6 +28,11 @@
 	 */
 	var Toolbar = function (config) {
 		Util.apply(this, config);
+
+		/**
+		 * The toolbar items
+		 */
+		this.items = {};
 	};
 
 	Toolbar.prototype = {
@@ -73,11 +78,6 @@
 		},
 
 		/**
-		 * The toolbar items
-		 */
-		items: {},
-
-		/**
 		 * Create the toolbar items based on editor toolbar configuration
 		 */
 		addItems: function () {