The Spectre Dimension worked fine initially when I was the first one to access it. Then, when someone else made a spectre key and tried to visit their spectre, they were placed in the void and the game tried to teleport them into my Spectre. Their Spectre area as far as I can tell did not ever generate. The keys were both crafted, neither were cheated in with commands or creative.

I'm not sure what information would be the most helpful for solving this.

Sorry for the spam btw, I thought I solved it and closed the issue. The player is teleported to their spectre every time they use the key positionally but visually they're in the void somewhere. Teleporting them to the coords f3 says they are at fixes the glitching.

I am able to locate them at a different set of coords entirely.
https://imgur.com/brbikeG