Hello list,

It seems that font scaling to a letter is not working consistently in LMTX.

This example:

    \definefont[TitleA][Sans sa a]
    \definefont[TitleAB][Sansbold sa a]
    \starttext
    {\ssa This is ssa \TitleA and this is TitleA}\par
    {\ssbf This is ssbf \TitleAB and this is TitleAB}\par
    \contextbanner
    \stoptext

Produces different relevant output with each engine.

I suppose one could use numeric values instead of defined font size 
letters as a work-around, but that means lack of coordination with 
custom sizes in \definebodyfontenvironment.

-- 
Rik