Save a new sort/order not possible

Since the update the sort n order (drag and drop -> save it) does not work anymore. After I save our new sort the list stays in the old sort. Even when I delete the cache it wont work. Same if I delete a tab and create a new tab and order my input field the same issue is still alive: wont save it. We try it on several different websites. The procedure is still the same: wont save the new sort/order of input fields.