Fonts are missing in export epub under macOS

Hello. I found some problems to create E-books (ePub) with LibreOffice. Here ist my first problem:

In LibreOffice under macOS 10.15.7 or 11.6 it is currently not possible to include fonts in the export to an ePub.
This currently only works under Windows 10.

(more screenshots in the ZIP-Archiv)

You can download all my files als ZIP-Archiv (44.4 Myte) including .otf from mac and win and also the .epub-files from my website:

Best regards,