I've been trying to make Firefox use Wingdings as the default font for all text on macOS (please do not ask why). Following this guide, I went to the Fonts & Colors section and changed all the fonts to Wingdings. However, Firefox does not seem to like this, and instead uses some Arial-like font for all pages.
Doing the exact same thing, but using another font, such as Comic Sans, does work however.
Why does Comic Sans work as a global font, but not Wingdings? And how can I force Firefox to use Wingdings?
Further experimenting, it seems like some Wingdings-like fonts do not work, like Webdings or Wingdings 2 and 3. Most other fonts seem to work.