So a warning to people in the Deep Dark, I made an Eldritch Portal that failed to create terrain, so if you go in you stay in the void and can't fly out. Coords are X: -8286, Z: 9925, Y: 83
This is actually the first portal i know of like this, and i have made 4 different dimensions on this server
it does that if you put a portal within 1000 blocks of another one. It's easiest to use waypoints to make sure that you're far enough away before putting one done.
Actually, that would just link both portals together, I have seen that. This literally made a new area with no blocks.