I have a problem with the sortable functionality. I have to sortable lists, and I want to drag elements from #sortable1 to #sortable2 (but sometimes the other way around), but the elements from #sortable1 must not dissapear.

I build up a small test site in jsfiddle ( http://jsfiddle.net/N73e6/) to show the problem. Declaring helper as clone or not makes no difference (as I see).

An alternative method (as you may now) is to use a draggable and a sortable ( http://jsfiddle.net/dxuJv/), and thus I retain the original element on the list, but, I can't set the animation time, there is some strange style changes on the dragging object and of course I can sort the original list.

Is this a bug, or I'm missing something?