title: jquery ui droppable elements close to each other
body: <p>i have a few droppable elements that are close to each other and i'm using <code>tolerance : 'touch'</code>. when a draggable element hover between two of them, the drop event fire twice.</p>
  
  <p>see my example: <a href="https://jsfiddle.net/rcrurwt5/" rel="nofollow">https://jsfiddle.net/rcrurwt5/</a></p>
  
  <p>any suggestion?</p>