What you are looking at is a"feature called "overscan" (or "zoom" on some TVs). It's the TV itself cutting off the edges!
So, look for a feature called overscan (or zoom) in the setup of the TV, and disable it!
Long time ago, when cathode ray tubes - CRTs - were used as television displays, and the images were transferred in an analogue way, it had a technical reason, it was useful.
The TV stations were used to always have a border with nothing important in it.
With pixel matrix displays like LCD, overscan no longer makes sense.
But people are used to have it, and think it's better to have the feature than not have it.
If you want to sell LCD TVs, you have customers asking for it, and because it costs nothing to provide it, you better list that feature in the description.
It will not do any harm, no problem. Except if someone enables it.