jQuery Sortable List - scroll bar jumps up when sorting

Question

I created a demo: http://pastebin.me/584b9a86d715c9ba85b7bebf0375e237

When the scroll bar is at the bottom and you drag items to sort them, it causes the scroll bar

Answer 1

This is how i solve the issue.

   $(".groups").sortable({
    ...
    helper: function(event, ui){
      lastScrollPosition =  $("body").scrollTop();
    },
    start: function(e, ui){
        // avoid scroll jump
        $("body").scrollTop(lastScrollPosition);
    },
   });