\unprotect
\protect

\setupnote[footnote][location=lastcolumn] % <- causes layout problem


\definecolumnset[two][n=2]

\enablemode[twocolumns] % columnsets|twocolumns

\starttext

% \startcolumns
% \startcolumnset[two]

\starttabulate
\NC xx\footnote{\input tufte }\NC xxx\NC\NR
\stoptabulate

\bTABLE
\bTR \bTD xx\footnote{\input tufte }\eTD \eTR
\eTABLE

\dorecurse{2}{\input knuth }  \footnote{\input tufte}
\dorecurse{2}{\input knuth }

% \stopcolumnset
% \stopcolumns

\stoptext
