Where are embedded font stored?

Where are the fonts embedded in an .odt or .fodt stored? I created a Writer document and changed some fonts to specialty fonts, both modifying just text and modifying styles, and in File > Properties > Fonts, checked off “Embed fonts in the document.” When I save the files and unzip them, I find the fonts declared in the styles.xml like so:

      <style:font-face style:name="60s Pop" svg:font-family="&apos;60s Pop&apos;" style:font-pitch="variable"/>
      <style:font-face style:name="Hack" svg:font-family="Hack" style:font-adornments="Bold" style:font-pitch="variable"/>

However, I don’t see the fonts themselves anywhere in the unzipped directory, and no file in it to be large enough to store them. Where do the fonts go? Or do I need to do something else to get them stored in the ODF?

I am using on OSX 10.11.5

This appears to be a known bug on macOS: https://bugs.documentfoundation.org/show_bug.cgi?id=72456