Spinner buttons does not work

Spinner buttons does not work

Hi!

This is my first time using Spinner widget using jQuery v1.9.1 and jQuery UI - v1.10.3.

I am using it into a table, where I have two spinners by row that have a css class named 'porcentaje_spinner'.

To configure all spinners I use the following code:
  1. $( ".porcentaje_spinner" ).spinner({
  2.         min: 0,
  3.         max: 100,
  4.         numberFormat: "n"
  5.     });
When I open the web page on browser (Chrome, Firefox and IE10), spinner get configured, up and down arrow buttons show correctly.

The problem is that it works when I scroll the mouse wheel, when I press up and down on keyboard, and when I press Page Up and Page Down on keyboard too. But when I click on arrow buttons at right side of text input, it do not work.

What am I doing wrong? is it some bug? 

Thanks in advance