Metadata(Title Cover) issue with DVD folders

I’ve been using this metadata 101 guide # Folder Artwork for many of my titles. Today I found that it does NOT work with DVD folders.
Screen Shot 2020-07-15 at 3.06.20 PM

Infuse on my apple TV 4k does NOT use the folder.jpg inside the DVD.Title directory.
But that DVD.Title.jpg file does work.
I want everything to be grouped inside one folder so I prefer that folder.jpg/folder.png way.

BTW, for BDMV folders, it works. I can’t figure out why this does NOT work with DVD folders.