Case in point. I have all four Ghostbusters movies. All in 4K.
When I go to library and look at my 4K movies, the 3rd one doesn’t show. When I go to search for it, I find it and it is indeed a 4K copy.
Mind you that until latest build of tvOS my library didn’t show on my 3 most recent ATV4K models at all (but just fine on the first gen 4K and HD models).
Still.
Anyone?
What does it show in the Movies app?
It shows what you see.