FP does see any fonts on my computer. I've reinstalled a few times, added 'LogAllLoadedFonts=Yes' to the FP config file and deleted the last font encountered in the 'Fonts.err' file.
I was trying to fix a slow preview issue but will start a new thread for that one.
1 problem at a time.
MacOS 10.14.5 Mojave (the latest)
FP 10.1.11 (the latest)