Good evening!
I want to scale a font loaded via the simplefonts so sans and serif have the same x-height.
But as soon as I use a font size larger than 12pt, the scaling is somehow off or ignored.
Example:

\usemodule[simplefonts]
\setupsimplefonts[expansion=quality, protrusion=quality] 
\setmainfont[Times New Roman]
\setsansfont[Arial][scale=0.863]
\starttext
\setupbodyfont[6pt]
06pt serif xx{\ss xx sans}\\ %fine
\setupbodyfont[12pt]
12pt serif xx{\ss xx sans}\\ %fine, too
\setupbodyfont[14pt]
14pt serif xx{\ss xx sans}\\ %here it starts to be off
\setupbodyfont[16pt]
16pt serif xx{\ss xx sans}\\
\stoptext

What is up with that?