missing fonts from export when using shortcodes-ultimate plugin

test with this plugin:

https://wordpress.org/plugins/shortcodes-ultimate/

originally mentioned in:

https://wk2edu.net/2019/10/08/%e9%9d%99%e7%9a%84%e3%83%9a%e3%83%bc%e3%82%b8%e3%81%a7shortcodes-ultimate%e3%81%ae%e3%82%a2%e3%82%a4%e3%82%b3%e3%83%b3%e3%81%8c%e8%a1%a8%e7%a4%ba%e3%81%95%e3%82%8c%e3%81%aa%e3%81%84%ef%bc%81%ef%bc%9f/