1.8 client doesn't show join message correctly

[RaphiMC]

How it should look: (1.19)

How it looks with 1.8:

The relevent config section:

joinMessage: enable: true text: '{"text": "&7---------- &c&lWord of warning &7---------- \n&61. &cThe IP of the server is public and shared, so it might be banned on some servers. \n&62. &cUse the proxy at your own risk. You might get banned on some servers when doing so. \n&63. &cOn some versions block bounding boxes and mining speeds cause bugs as they got changed. You may need to break blocks multiple times before they disappear. \n&7----------------------------------- \n&aWelcome to the &5ViaProxy &aconnector! \n&aOfficial discord: &6https://discord.gg/dCzT9XHEWu \n&aType &5/viaproxy &ato get started. \n&aTo join online mode servers you need to install the following mod: &6https://github.com/RaphiMC/OpenAuthMod/releases/latest"}'