Pressing Enter is creating the Tag but keeping the Text

Is this a bug?
#1

Version: 4.0.5

Problem:
In a multitag (with tags: true or with pre-filled tags) everytime when i hit enter to select the tag, it creates the tag but keeps the text right on side of the new tag, it just disappear if I press another key after.

Example:
insta

As you can see, when I digit a tag and press Enter, it creates, but keep the original text in the right side of the new tag…

Is it normal behavior? Or what should I do?

My Select2 Code:

var editorTagElement = document.createElement("select");
editorTagElement.className('myEditor');

this.OptionsSelect2 = {};
this.OptionsSelect2.placeholder = "";
this.OptionsSelect2.language = ReturnCustomLanguage();
this.OptionsSelect2.formatNoMatches = function () {
       return '';
}; 
this.OptionsSelect2.allowClear = true;
this.OptionsSelect2.minimumInputLength = 2;
this.OptionsSelect2.tags = true;
this.OptionsSelect2.tokenSeparators = [' '];          
this.OptionsSelect2.createTag = function (params) {              
      var term = $.trim(params.term);
      if (term.length < 2) {
             return null;
      }
      term = term.replace(/ /g, "");         
      return {
           id: term,
           text: term,
           newTag: true
      }
};
this.OptionsSelect2.closeOnSelect = false;

$('.myEditor').select2(this.OptionsSelect2);