title: ExtJS can't select month/year in datepicker
body: <p>I'm using ExtJS 3 and when I want to select a date for the datepicker, I can only set day and month (through left/right arrows). The month/year panel comes down but quickly goes away, making it impossible to select it. This is a desktop recording that describes best the behaviour: <a href="http://flic.kr/p/9VbX3m" rel="nofollow">http://flic.kr/p/9VbX3m</a> . Also, I am mentioning that I don't get any errors in Firebug.</p>
  
  <p><strong>Update</strong>: I noticed that the month/year box that drops down remains down and I can bring it up by changing the <code>top:0;</code> property to something like <code>top:-180px;</code> and then I can select the month/year, but why ? I didn't mess with any CSS values.</p>
  
  <p>Any idea ? Thanks.</p>