I have noted that on at least some of the "Look inside" features all that is given is a continual repeating of the Front Matter. This is certainly not helpful. See
https://www.logos.com/product/9910/the-harvard-classics-vol-13-virgils-aeneid-translated-by-john-dryden
Yes, I've seen that "Look Inside" bug quite frequently. It would be great if this could be fixed. I think it happens in most books, though usually it's only the last page of material that gets repeated when you scroll beyond the end, and it's usually real content (not just front matter), so it's usually not a big deal. I've never reported it before.
