Minecraft skin bugs what to do?

I recently created a new Minecradt skin, but it is bugged in-game.

In the skin preview in Minecraft Launcher the skin looks completely normal, but in-game it is so strange white and black. Can someone help me?

I play in the 1.8.9 Labymod.

Go to the settings skin settings and since everything on or off

No, the hairstyle also goes away

Try to start in version 1.12 without Labymod