One of my close friends has one of these 4K TVs and watching "Friends" (the TV show) at his home was quite eerie, it felt like all the characters were part of our room, and not in a good way. Color- and resolution- imperfections make a movie, well, more movie-like, at least for us people who got to see movies displayed on screens not very much unlike what you could see in "Cinema Paradiso" [1]
https://whatis.techtarget.com/definition/soap-opera-effect-m...
People in here seem not to understand that some of the colours not displaying perfectly or a colour "merging" into its neighbouring screen colour is a feature, not a bug. I do not want to see all the pixels and all the colours on the screen as they are, it's as simple as that.
My guess is that the blu-ray release was just an early one that happened to be a poorly done transfer.