[NTG-context] backgroundscreen no longer working

Hi, backgroundscreen is no longer working here, apparently since the beta 2015-04-12. \starttext % \setupbackgrounds [page] [background=color,backgroundcolor=lightgray] \setupbackgrounds [page] [background=screen,backgroundscreen=.8] \input knuth \stoptext If I use the pack-rul.mkiv from 2015-04-08 it works again. Is it deprecated now, or is this just a bug? Thanks. -- Tom