Select2: How to prevent tags sorting

Question

When user selects many items (tags), they are automatically sorted alphabetically. How to prevent automatic sort and keep user's order using Select2 4.0?

Update:

The mentioned "possible dublicate question" is for the older version of Select2 v3... I ask about version 4... It differs form older ones and mentioned answers dosn't solve the problem.

Answer 1

I've found a solution that works with Select2 v4. It changes the order of items - item selected by user are moved to the end.

$("select").select2();

$("select").on("select2:select", function (evt) {
  var element = evt.params.data.element;
  var $element = $(element);
  
  $element.detach();
  $(this).append($element);
  $(this).trigger("change");
});

<link href="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.0/css/select2.css" rel="stylesheet"/>

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.0/js/select2.js"></script>

<select style="width: 500px;" multiple="multiple">
  <option>two</option>
  <option>four</option>
  <option>six</option>
</select>

Update

The solution was found here: github.com/select2/select2/issues/3106. Its author is kevin-brown.