Draggable touch screen

Draggable touch screen

I've got a couple of sites with draggable elements, having just got a touch screen laptop I would like them to work with that, please consider the following:

The example on https://jqueryui.com/draggable/ works fine, I can drag the little box around with my finger.

The Source from the above, cut and pasted, doesn't.

All my draggables work perfectly with mouse moves.

All the buttons on my sites respond to a tap.

So can anyone tell me what I'm missing?