Index: t3lib/js/extjs/components/pagetree/javascript/treeeditor.js
===================================================================
--- t3lib/js/extjs/components/pagetree/javascript/treeeditor.js	(revision 10261)
+++ t3lib/js/extjs/components/pagetree/javascript/treeeditor.js	(revision )
@@ -66,6 +66,7 @@
 		beforecomplete: function(node) {
 			this.updatedValue = this.getValue();
 			if (this.updatedValue === '') {
+				this.cancelEdit();
 				return false;
 			}
 			this.setValue(this.editNode.attributes.prefix + Ext.util.Format.htmlEncode(this.updatedValue) + this.editNode.attributes.suffix);