I've noticed a problem with the Grid when using grouping as well as grid row drag and drop functionality.
If both are enabled, the group headers don't span the entire width of the grid. The rendered data cell that represents the group header gets a colspan attribute that is 1 below the desired number. For example, if my Grid has grouping enabled and has 2 GridColums and 1 GridCheckboxColumn, the colspan should be 4 (see first attachment), which is correct.
But, when I also enable the drag and drop functionality (using RowDraggable), the computed colspan is still 4, even though it should be scaled up to 5 (see second attachment).
Is there any way we can override this behaviour, or is there any other work-around?