I've changed the main font of my websites to a self-hosted one. Because I'm lazy I used one font file for 3 websites. This works fine on the main website www.mothsoftware.com. On the other websites manual.mothsoftware.com and messages.mothsoftware.com the self-hosted font is not always loaded. The headers should have Bree Serif in the screenshot below:
The link to the font is https://www.mothsoftware.com/downloads/BreeSerif-Regular.ttf .
Is this a bug or a feature?