A bug I am facing with JqueryUI draggable/droppable

Question

I would appreciate if someone can help me out,

here's my code :

`https://jsfiddle.net/m796a3ud/`

What I want to do is drag an image from these list of Images and be able to get a clone that's draggable, and when I put it inside the box it counts how many images are inside, it works good for the most part but when I try to drag the cloned image in and out of the box a couple of times the clone gets cloned it self which is not what I want, I would really appreciate the help!

thanks.