If I have permission to the command it teleport me to the nether sometimes but if I don't have permission to use the command it always teleport me to the nether. For example if i create a portal with this command /portal create name:portal command:"spawn" but they don't have permission for /spawn it will teleport them to the nether.

ill have to check that out, it seems like an odd bug that shouldnt happen at any possible time. It it only when in creative?

Issue should be fixed now