I have a form with multiple text inputs and some select2 elements. Using the keyboard to tab between fields works fine - the Select2 element behaves like a form element and
an important thing is to keep the multiselect open all the time. The simplest way is to fire open event on 'conditions' in your code:
United States United Kingdom Afghanistan Aland Islands Albania Algeria
javascript:
$(".select2-select").select2({closeOnSelect:false}); $("#myList").select2("open");
fiddle: http://jsfiddle.net/xpvt214o/153442/