Just started with select2 and found the following issue.
$('#category').select2({placeholder: "Select a category"});
$.each(categories, function (i, obj) {
$('#category').append($('<option>', {
value: obj.id,
text: obj.name
}));
}});
$('#category').change(function () {
reloadItems()
});
When you select an item, and then another, the previous selected stays grey and it is not possible to select it again: