It seems that not only does the custom dimension not work but it removes the other dimensions like the nether and the end (1.16.4) on a realms server, Works fine on Single player LAN and also using Server Jar.
Aiden
It seems that not only does the custom dimension not work but it removes the other dimensions like the nether and the end (1.16.4) on a realms server, Works fine on Single player LAN and also using Server Jar.