z-index not properly restored after drag

[zenslug]

I have a draggable div that is postion: absolute, width/height: 300px, z-index: 100. Underneath I have a modal shield (a width/height: 100% layer of black with 50% opacity). The point is to allow the draggable div to be moved around the screen while keeping the modal shield at a lower z-index than the block. This prevents the rest of the underlying page from getting any clicks/interaction.

What happens:
After dragging the element around the page, once the drag has finished, the draggable div ends up with a z-index of 0. I would expect the z-index to be restored to its original state. By setting the parameter "z-index: 100", this only affects the z-index during drag. As a separate issue, setting the onEnd callback to set the z-index causes other issues (the drag never ends).

[Kedarnath-Rothe]

Please assign this issue to me