Custom fonts on multiple domain sites

Dear team of GeneratePress,

I really love the new feature of easily installing custom fonts. But – as I publish sites in a multi lingual country – I normally use one wordpress installation with multiple domains, the use of custom fonts locally installed produces errors with missing ‘Access-Control-Allow-Origin’ header permission.

Is there a way to easily fix it (or pass by)?
And: Is there a reason why you do not use a relative path (like /wp-content/uploads/generatepress/fonts/ instead of https://mydomain.com/wp-content/…)? With a relative path we would not experience any cross-domain problems, I guess.

Best regards
Thomas