It is definitely correct on my phone (running iOS 11.2.1). As I wrote, this was only recently fixed since it was not working correctly when I checked a couple of weeks ago. Yes, I'm well aware of this and it is reflected in what I see in the iOS TV app, i.e. titles ported via MA are not flagged as 4K. That includes "Live, Die, Repeat: Edge of Tomorrow" which I also own and redeemed in Vudu. Again, it only works in the TV app, not in the iTunes store app.