Select2 4.0.1 Multiple Tags SelectOnClose Issue

HTML

<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.1/css/select2.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.1/js/select2.min.js"></script>
<select multiple="multiple">
<option value="1" selected="selected">a</option>
<option value="2" selected="selected">b</option>
<option value="3" selected="selected">c</option>
</select>

<input type="text" />

JavaScript

jQuery(function() {
	$('select').select2({
  	width: '100%',
    selectOnClose: true,
    tags: true,
    close: function() {
    	alert(arguments);
    } 
  });
});