On 24 Apr 2020, at 08:53, Wolfgang Schuster <wolfgang.schuster.lists@gmail.com> wrote:

Can you try this:

\definefontfamily [mainface] [rm] [Optima]
  [it=optimaitalic,
   bf=optimabold,
   bi=optimabolditalic]

I altready did that earlier as per the Wiki information (did not report it) and just tried again. No difference.

G