[NTG-context] framedtext in itemize

Why does framedtext extends to the right in \itemize? Shouldn't the width be reduced by the extend of the item-shift? Isn't that the idea behind the "fit"-parameter. It wouldn't be a problem to calculate a reduced width, but how can I access the marginshift caused by the item? A minimal example: \starttext \startitemize[a] \item \startframedtext[offset=0pt,width=fit]\input tufte\stopframedtext \item \input tufte \stopitemize \startframedtext[offset=0pt,width=fit]\input tufte\stopframedtext \stoptext Hans van der Meer