Can you also check for “Fira Mono”?
The question is about OTFs, TTFs work mostly fine (as far as we know). If you get OTFs that are not somehow system fonts to embed, come and collect your Nobel prize in font technology 
Some TTFs don’t seem to work. At least I’m not able to embed third party fonts correctly and the GF with the changed name encounter the same issue. So I’m really struggling to find a solution that works.
“Fira Mono” does not appear in Word. However, “Fira” is part of Word’s Swedish thesaurus.
thanks for checking Florian!
Somewhat ironically, given the topic at hand, fira in Swedish means ‘celebrate’!