validation - jquery mobile validate "data-native=false" selectbox on change not working -

i'm running odd problem.

i'm using jquery mobile , know validate plugin. works fine except when turn false data-native attribute. error message appears on submit, never disappears onchange. i'm missing something? update1: more weird, updates when click on error message, or on submit button

html code:

<div id="invalid-id_form_choose" class="errors"></div>         <select id="id_form_choose" name="question" data-theme="b" data-native-menu="false" class="question">             <option value="">veuillez choisir</option> <option  value="first_pet_name">quel est le nom de votre premier animal de compagnie ?/option> <option  value="mother_place_of_birth">dans quelle ville est née votre mère ?</option>          </select> 

js code:

jquery.validator.addclassrules({     question:{        required: true     } }); jquery.validator.setdefaults({ errorplacement: function(error, element) {          error.appendto('#invalid-' + element.attr('id'));   } }); $(document).bind('pageinit',function(){   $("#step1_form").validate({      messages:{          question:{             required: "veuillez renseigner ce champ obligatoire"         }      } }); 

css code

.errors{     color:red; } 

data-native=false hide original select box.

to validate need enable validation of hidden fields.

read more here: jquery validate - enable validation hidden fields