Autocomplete: Multiple demo has errors

There is an error when trying to tab away from a multiple autocomplete decorated textbox, the bug exists in this demo:

http://jqueryui.com/autocomplete/#multiple

Replicate error by typing "ja" in the textbox and then press tab.

The error message is: Uncaught TypeError: Cannot read property 'menu' of undefined

which is caused by the fact that $(this).data("autocomplete") is undefined.

The error resides in the demo codes keydown handler, I have replaced that code with the following:

      	if (event.keyCode === $.ui.keyCode.TAB &&
		$('.ui-autocomplete.ui-menu a.ui-state-focus:visible').length > 0) {
      		event.preventDefault();
      	}

The result is that the default action of pressing tab only will be prevented when an item is actually selected in the suggestion list. This works in my case when I have only one autocomplete textbox within the page. A more general solution is probably needed.