There aren't any world editors for switch though, and mods are not a thing that nintendo allows. I'm pretty sure that there was an ID conflict during world generation, which can happen, believe it or not. (I found palmwood leggings in a chest once on PC during 1.3.0.1).This is the wrong place for that, it'd be better served as a profile post. Also, that doesn't happen unless you modify the world or use mods, so...