The combat chamber behind the wall of copper grates at the bottom of 'intersection_3' sometimes has a wall blocking the room, making the room hidden from the player.

To reproduce, locate a Trial Chamber with intersection_3, and check if the room behind the wall of copper grates has a clear entrance.

In 1.21.1, you can find a broken trial chamber in this seed 756826050 located at 2964 -37 -4768. This trial chamber has since changed in 24w33a and has entirely new generation.

Expected Results:
The room behind the grates has a clear entrance.

Observed Results:
The room behind the grates is occasionally blocked by a wall, therefore not having a clear indication a room is there.