Problem with a large select-menu when using ajax call on change event using jQuery Mobile 1.3

Problem with a large select-menu when using ajax call on change event using jQuery Mobile 1.3

I'm using jQuery Mobile 1.3, with a theme made using themeroller.

I have a large select-menu with the option data-native-menu="false" (When i mean large i'm talking about 30 items), i have bind this on Change event:

      $('#select').on("change", function (event) {
            $SectorPropiedad = $('#select').val();
           
            if (_filterRefresh) {
                cargarDatosInmuebles($SectorPropiedad);
            }
        });

inside "cargarDatosInmuebles" function i make an ajax Call. When the ajax call its made, the select menu gets frozen and dont close. If i supress the ajax Call, the select menu close normally; also, if i change to jQuery Mobile 1.2, the select menu closes normally with or without the ajax call.

Sorry for my english...

And Thank you in advance...