[NTG-context] preventing column break after section title

Hi, How could I prevent a column break after the second section title please? Minimal example: \starttext \startcolumns[n=2] \section{title 1} \dorecurse{22}{bla\par} \section{title 2} % Here starts a new column. \startitemize \dorecurse{15}{\item bla} \stopitemize \stopcolumns \stoptext I’ve tried "\setuphead[section][after={\columnbreak[no]}]", but it does not help. TIA for any hints, -- Peter