There is a bug that I drag a block want to insert into new place, but exchanged.

[fangsmile]

http://qianduanblog.com/post/jquery-plugin-13-jquery-drop-drag-release-sorting-replacement.html
Like this article write, I want the 2.2 insert into a new place, but it is 2.3(exchange places) sometimes.
And I test it only occure on chrome, it is well in IE