Index: typo3/js/sizemanager.js
===================================================================
--- typo3/js/sizemanager.js	(revision 3014)
+++ typo3/js/sizemanager.js	(working copy)
@@ -31,6 +31,13 @@
 	 * registers for resize event listener and executes on DOM ready
 	 */
 	initialize: function() {
+		if (navigator.userAgent.indexOf('WebKit')) {
+			var rs = document.readyState;
+			if (rs != 'complete') {
+				window.setTimeout('TYPO3BackendSizeManager.initialize()', 100);
+				return;
+			}
+		}
 		Event.observe(window, 'resize', this.resizeBackend);
 		Event.observe(document, 'dom:loaded', this.resizeBackend);
 	},
Index: typo3/css/backend-scaffolding.css
===================================================================
--- typo3/css/backend-scaffolding.css	(revision 3014)
+++ typo3/css/backend-scaffolding.css	(working copy)
@@ -51,7 +51,7 @@
 }
 
 iframe {
-	width: 100%;
+	width: 99.9%;
 }
 
 #typo3-content,