I have several draggable elements
Box 1: Milk was a bad choice.
This is a known chrome issue. Problem is, as Joerg mentions that you manipulates the dom on dragstart.
You can do so, but you need to do it in a timeout.
As i mentioned in the topic dragend, dragenter, and dragleave firing off immediately when I drag , what solved the problem (which looks to be a Chrome bug) for me was to add a setTimeout of 10 milliseconds into the handler and manipulate the DOM in that timeout.
I don't have a direct solution, but changing the DOM in the dragStart event handler is causing this problem, and any code that changes the DOM should really go in the dragEnter event handler - doing so, drag&drop events are fired more reliably.
Not sure whether this is by design - it feels a bit like a bug though.