Decimal Steps with Range Slider?

Decimal Steps with Range Slider?

Though HTML5's "range" input type does allow a step value that accommodates decimals, jQuery Mobile doesn't seem to respect that. It looks as if JQM just rounds the value up, which isn't good for my use. I am trying to use the following:
  1. <input type="range" name="HoursWorked" id="HoursWorked" value="1" min="1" max="24" step="0.1"  />
As I said, JQM is just rounding my slider value, ignoring the actual step value. Is there a reason for this? Also, can I disable this behavior? This specific use requires the ability to choose "tenth" values, like 2.5 or 3.2.