Bug In Compile (Scrivener 1.9.16)

I lose my original font as I export my project. All other header, footer and page number fonts work fine. I tried font override too, but it won’t work. The default font everytime is Courier Prime.
Please fix the issue with a quick update, or guide me if I am wrong.

The correction of bugs in v. 1.9.x is Version 3. The team won’t be fixing bugs in a version to be superseded.