Manual Grouping of Task Panel items no longer possible

view story

http://www.kubuntuforums.net – Hi, I installed Raring, but at some point recently it seems I got upgraded to Saucy. When I first installed, I am 99% sure that manual grouping by ALT+dragging icons over one another worked (See here). Now with Saucy, it no longer works, the icons just get re-ordered. Specifically, it appears that the "Manually" option from the Grouping dropdown has gone. (HowTos)