Okay, I put it on my notes. But I do not have any Apple products, I even know no one who has an iPad or Macbook (thank god ) and can only use emulators where I can't reproduce it. I'll not say that I don't care about this but I need a way to find a possibility to test, and this can take a while.
Edit: So what I found out is, that MacOS is not able to use any 'calc' for variable ratio display. So we can remove the footer if the page is < 900px or add some space below the inner-page. Will think about what could be better.