In the “Underhalls” secret level, once you get the blue key golem, open the door and reach the room where the objective changes to “Explore...”, if you go to a certain cage (shown in the attached screenshot), you aren’t able to leave. You would have to teleport to a friend if on multiplayer or restart the level.

What I expected to happen was...:

When I got to the cage, I leave after checking it out.

What actually happened was...:

Instead, I was trapped there with no easy way of leaving.

Steps to Reproduce:

1. Look for the cage shown in the screenshot after opening the door that requires a blue key golem (in the Underhalls level).
2. Get in the area where the player is shown in said screenshot.
3. Now, you can’t leave!