Datatables Sorting Styles being incorrectly applied to header

I am having an issue after updating from 1.9 to 1.10 in the the header sorting styles seem to be applied to both and the inside the sort_wrapper div which is inside the this is causing a dark background to cover the entire head () as opposed to in 1.9 where it was only applied it inside the sort wrapper () I have tried setting "orderClasses": false in the init object but it seems to make no difference Any Ideas?