When I tried to leave the Bumblezone by falling into the void, it teleported me back to my spawn in the Bumblezone. Super weird. i tried again a second time and it worked. I wonder what caused it.

I just tested with a new world with the_bumblezone_forge-4.3.6+1.18.1.jar bumblezone. I entered the dimension and then exited it just fine. Did you enter the dimension with an older version of bumblezone or entered by piston pushing in single player?

Gonna close this as I cannot reproduce the issue and havent gotten anymore info over 10 days