title: After drag n drop sorting element create duplicasy
body: <p>I am creating the simple drag n drop with sorting but I am having a problem and that is after dragging and dropping the element when I sort them the the duplicasy of elements takes place and the second problem is with contenteditable it is not working properly when I right click then it works but when I left click it work sometime. What am I doing wrong. How can I solve it.</p>