If animation is set to true, the range of a slider with 2 handles will not work properly

I've created a slider with 2 handles and have set the range and animate options to true. When a click event occurs on the slider, but outside the handles, the handles animate properly, but the CSS styled range does not - the range's width remains set to the width between the handles when the animation began.

In order to have a correctly displayed range, I had to set the animate option to false.

I've only tested this in IE7 and Firefox3, but the problem occurs in both these browsers.

(I used jquery 1.2.6 and jquery-ui 1.5.3)