[NTG-context] Square pens and dash pattern

Hi, There appears to be a metapost bug with square pens and dash patterns: \starttext \startMPcode pickup pencircle scaled 1bp; drawarrow origin -- (5cm, 4cm) dashed evenly; pickup pensquare scaled 1bp; drawarrow origin -- (5cm,-4cm) dashed evenly; \stopMPcode \stoptext Note that the second arrow is not dashed at all! This is not due to the thick pen. Aditya