[NTG-context] floats disturb grid setting

As soon as I use floats, text isn’t typeset on the grid any more: \setuppaper[A5] \setuplayout[grid=yes] \showframe\showgrid \setupexternalfigure[ location={local,global,default}, ] \starttext \samplefile{lorem} \startplacefigure[location=left,title=left]% \externalfigure[mill][width=.25\textwidth] \stopplacefigure \samplefile{lorem} \startplacefigure[location=bottom,title=bottom]% \externalfigure[cow][width=.25\textwidth] \stopplacefigure \startplacefigure[location=right,title=right]% \externalfigure[mill][width=.25\textwidth] \stopplacefigure \samplefile{lorem} \startplacefigure[location=left,title=left]% \externalfigure[mill][width=.25\textwidth] \stopplacefigure \samplefile{lorem} \stoptext Hraban