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:

  1. Open the file spigot.yml in the main directory of your server.
  2. Set the setting bungeecord in the settings section to true.
  3. Now open the file config.yml in the main directory of your BungeeCord server.
  4. Ensure that your have set ip_forward to true.
  5. Restart the Spigot servers and BungeeCord proxy to finish the process.
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