The problem is that when the dropdown list is rendered the scrollbar disappears if I attempt to click on it. This happens only on Chrome, Opera and Safari, and I can only assume on IE, but I haven't tested for IE yet. In Firefox there are no problems. There are no problems in Chrome, Opera and Safari if I use the mouse scroll wheel.
For the CSS I basically set the overflow-y property of the div to scroll. I am assuming that the bug is somewhere in the jquery UI. Has anyone come across a similar issue and if so have you been able to repair it? Thanks.