Item loss going underground

Mods, maybe.

@un_expected Did you figure out what caused it? Was there a mod, which when disabled got rid of the issue? We are having the same issue, with a world. Every time we move to the underground, we get to the same random location, in the bat-jumpy spider place. If we go up, we spawn at the base. Neither locations are cave entrances. And our character resets to the state, with which we logged in. Also, there seems to be no saved data of the world. We wanted to try to roll back the world a few days, but the rollbacks were only for days which we played earlier.