The Demon of Flesh enemy pulled me on top of a challenge chest in an expedition. I tried teleporting down with "Aether Jump" and "Light-bringer" but it did not work. When the last enemies of the challenge chest were defeated, the items also dropped on top of the chest. I had to restart the game at this moment, because nothing else was possible to get back to the city or the playable area of the expedition.

Here are some screenshots of this bug: https://imgur.com/a/90kHWFX