draggable not dragging on touch (iPhone)

[cjwit]

Is there an accepted recent solution to the problem of draggable elements not working on touch screens? I've tried the solutions mentioned in some older forums like this one from 2012, but they have not worked. (These include using .touch() and jquery-ui-duck-punch.)

I can pull example code, but it seems like a known issue and it's working as expected on a laptop! The larger (and very much in progress) project is here with the specific point using draggable here.

Thanks