When a player made skin is worn sometimes it will not appear when you choose what format you want it in. Whichever one you pick, the skin will not appear. when you go into a world with this ghost skin on it tells you it’s invalid or corrupt, however if you change to the ghost skin while in a world it has no effect. Effects of ghost skins: invisible skin, invisible name tag, invisible hand and item in hand, invisible items in offhand and armour slots. ( note, the last two don’t effect your Gui, they just won’t be seen on the skin ) Despite the uses of ghost skins in trolling and messing around with friends, this will or has been taken advantage of by hackers. I would advise that this gets looked at and sorted out immediately as this is not something to take lightly in my opinion. For your information this has been around since just after 1.14.