If skins on a BungeeCord server are not displayed correctly, this may be the result of an incorrect setting. To solve the problem you have to follow the following steps:
- Open the file spigot.yml in the main directory of your server.
- Set the setting bungeecord in the settings section to true.
- Now open the file config.yml in the main directory of your BungeeCord server.
- Ensure that your have set ip_forward to true.
- Restart the Spigot servers and BungeeCord proxy to finish the process.