issue with Dropping a component into DDgridlayout

[kirangudapatikewill]

Hi Thanks for a great Add-on ,
I am using DDVerticalLayout and DDGridlayout for designing the layout by adding firstcomponent and second component respectively in a Horizontalsplit Layout .
Components like button and text fields can be dragged from one layout to another,
Till here it works great.
The problem I am facing is to drop a component into DDgridlayout cell
scenario as below.
1)Dragged and dropped a component from DDGridlayout cell at (1,1) to the DDverticallayout .
2)Again trying to drag and drop component from DDVerticallayout to DDGlayout into the same cell i.e.( 1,1)
here it is not accepting the drop.

7.4,3 vaadin version
Please help in achieving this.
Thanks

[nhatnamnguyen]

I have the same issue with the Vaadin 7.4.2