hu_field03 accessible through a portal even though it (probably) shouldn't be in-game

Summary

hu_field03, which shouldn't have been added as, as far as I know, it was one of the maps removed in renewal, is accessible via a portal in hu_field02. You can go in, but you can't go out without using teleportation or something similar

Steps to reproduce

1. Go to hu_field02
2. Enter a portal on the right side of the map

Actual results

The map itself is works as usual but there are no mobs, npcs or portals present

Expected results

Either the map shouldn't be present, or should be present with the usual stuff