[NTG-context] issue with section title and numbers in margin

Hi there, I would like to get section titles that have aalt (actually, smcp and onum) and numbers in margin. It works fine with the following code: \setuphead[section][style=\sc\os,alternative=inmargin] \starttext \section{This is a title} \input{knuth} \stoptext But in-margin numbers don't work when adding OT features: \usemodule[simplefonts][size=12pt] \setmainfont[TeX Gyre Pagella] \definefontfeature[scttitle][default][aalt=yes] \setuphead[section][style=,alternative=inmargin,command=\addfs{scttitle}] \starttext \section{This is a title} \input{knuth} \stoptext Is there another way to add font features to \setuphead{} or have I hit a bug? Thanks for your help, Pablo -- http://www.ousia.tk