When someone changes there skin to custom it says some numbers.
Steps to reproduce:
It only says “%s changed to a custom skin.”
It only says “%s changed to a 1D12F433-883C-40E4-846B-4118E2EE5EFC skin.”
It might be the .png, the file name just shows up. For some reason. When 1.16 came out this bug occurred. The random message doesn’t show up when someone edits there character. You can check the images if you don’t understand.