[NTG-context] offset with \copypages

Hi, When inserting pages with \copypages, the included pages are slightly shifted to the left and to the bottom. Minimal example: % test-file.tex: \setuplayout[page] \starttext \input tufte \vfill \input tufte \stoptext % test.tex: \starttext \copypages[test-file.pdf] \stoptext How could I avoid this offset please? TIA for any hints, -- Peter