Bug - Compile to PDF with Cormorant font produces ghosted characters

When I compile everything works just fine, but the fonts rendered in the PDF are all doubled up with a very slight shift to the side. Within Scrivener this problem doesn’t occur.

I am not sure if it is a compile setting or if it is related to the font, Cormorant SemiBold. It is most obvious with large fonts, and in particular the letter S.
Even fullstop and apostrophe show this strange skew.
Any ideas what causes this?