[NTG-context] positioning of backgrounds

Hi all, I may have missed something here: I'm aware that processing backgrounds has changed. The following example places the background layer completely different in the current beta and when processed with a version from November: \definelayer[test][x=1mm,y=1mm,width=\paperwidth,height=22mm] \setlayer[test][x=104mm,y=11mm]{\externalfigure[cow][width=56mm]} \setupbackgrounds[page][background=test] \starttext Hello \stoptext Is that to be expected (i.e. should I adapt my letter template which positions a university logo on the page), or is that a temporary glitch and has to be fixed eventually? All best Thomas