KendoUI TreeList not taking Reordering or resizing into account

I have the following definition for my KendoTreeList:

$("#Assets_TreeSection").kendoTreeList({
        dataSource: tree_Datasource,
        height: 300,
        reorderable: true,
        columns: [
            { field: "AssetNumber", title: "Asset No" },
            { field: "AssetDescription", title: "Description" },
        ]
    });

The problem is that the reorderable true doesnt seem to take any effect on the tree produced. Any ideas why?