[NTG-context] references to footnotes are broken in mkiv

Hi all, the following example produces the correct reference in mkii but no reference in mkiv. Has anything changed, or is this a bug? Thanks Thomas \starttext A text\footnote[fnt:1]{A footnote} with a reference\footnote[fnt:2] {Another one} to a \in[fnt:2] footnote. \stoptext