Autocomplete disappear in IE7-IE10

Autocomplete disappear in IE7-IE10

Hi All,

I am using JQuery version 1.10.2 and JQuery UI version 1.10.3. I have autocomplete added to an input box in my page. It works fine on Chrome and Firefox, but on IE (versions ranging from 7 to 10) when I click with the mouse on the scrollbar right to the autocomplete box the box disappears and I am not able to select an item. If I use the mouse scroller though it works fine.

Here is an example how I use it.
I have the following CSS:
<style type="text/css">
.ui-autocomplete {
    max-height: 120px;
    overflow-y: auto;
    /* prevent horizontal scrollbar */
    overflow-x: hidden;
  }
  /* IE 6 doesn't support max-height
   * we use height instead, but this forces the menu to always be this tall
   */
  * html .ui-autocomplete {
    height: 120px;
  }
</style>

Then I add the autocomplete using the following JavaScript:

$("input", this).filter(":text").autocomplete({
source: arrayOfWorklistNames,
minLength: 0,
delay: 500,
position: { my : "right top", at: "right bottom", collision: "flip"}
});