[NTG-context] white-space after section-head in columns

Hi, What is the right way please to get normal white-space after a section in columns, i.e. not too much? Example, that shows the problem: --8<---------------cut here---------------start------------->8--- \starttext \startsection[title=Space is ok here] \input tufte \stopsection \startcolumns[n=2] \startsection[title=Too much white-space here] \input tufte \stopsection \setuphead[section][after=\vskip-2ex] \startsection[title=Space is ok here with workaround] \input tufte \stopsection \stopcolumns \stoptext --8<---------------cut here---------------end--------------->8--- TIA, -- Peter