createTokenItem doesn't add the new item to the select option list (jquery)

[jfeust]

Using selectivity-jquery 3.1.0.

$('.tags').selectivity({
    tokenSeparators: [','],
    createTokenItem: function (val) {
      return { id: val, text: val }
    }
  });

This adds new items to the selectivity div, but does not also add them to the <select class="tags"> <options> list. Thus when the form is submitted these "new values" are not submitted with it.

This does work in 2.1.0 from cdnjs but not with 3.1.0 jquery build.