Yes, I also need this fixed please
Has there been any progress made on this issue?
Workaround:
function pageLoad() {
var pivot = $find("<%=RadPivotGrid1.ClientID%>");
var colgroup = pivot.get_rowHeaderTable().getElementsByTagName("colgroup")[0];
var lastCol = colgroup.children[colgroup.children.length - 1];
colgroup.removeChild(lastCol);
colgroup.insertBefore(lastCol, colgroup.firstChild);
}