Hello,
I am a font designer and it's not the first time I'm experiencing this issue with a font. Usually the problem is fixed after a software update. Now I'm using the latest version 10.5 and the same problem appeared again in 2 of my fonts. Kerning and open type features are not working although they were exported correctly and they work properly with other software.
They are part of a font family, designed with the same software and while other fonts of the family work fine these two have the same issues.