Noticed my 4k movie purchase since has black bars top and bottom.
Is this the view the movie editor intended.
It depends on the technical specs of that certain movie. A movie with an aspect ratio (the proportional relationship between an image's width and heigh) of 16:9 will perfectly fit your 16:9 standard widescreen TV.
However, lots of movies have different aspect ratios. If so, one has the choice between (1) filling the TV screen but at the same time cutting the edges on the sides, or (2) don't cut edges but pay the price by having black bars top and bottom. Option 2 is most commonly used, as it is unfortunate not seeing the whole actual picture.
You can check a movie's aspect ratio for example under the technical specs section for each movie on a site like imdb.com or similar.