This addon adds the ability to remove nicknames over the heads of players, which is why players are not visible even without a shift through the blocks and at a long distance.
When turned on in the splice world, the addon will turn off nicknames for players, but if you want to experiment, then in the creative menu you can find a new item in which you can configure that certain players do not have a nickname, as well as all signed entities do not have a nickname either.

