There seems to be some subtle differences in the pdf output when comparing the old and new context

This is the context input:

\usemodule [vim]
\setuppapersize [A4]
\setuplayout [
  backspace=10mm,
  topspace=25mm,
  width=190mm,
  header=0mm,
  footer=0mm,
  height=240mm,
]

\setupheader [state=empty, no]
\setupbodyfontenvironment [default] [em=italic]
\definefontfamily [myfamily] [serif] [TeX Gyre Termes]
\setupbodyfont [myfamily, 10pt]
\definefontsize [e]
\definebodyfontenvironment [default] [e=3.5]
\starttext
\strut\vfill
\startalign[center]
{\tfe conText is fun}
\blank[10mm]
{\em ( ijver & vlijt 8+ )}

\stopalign
\vfill\strut
\stoptext


this is the old version

this is the new output