Stairwell Glitch

This is a strange glitch that forces you back down the stairwell, depending upon a number of circumstances.

Palace of Darkness Stairwell

The glitch can happen when you take the stairwell up to the Big Key, wasting around 10 seconds. There are a couple things that have to happen for this glitch to be armed to activate.

1. You have to fall into the basement originating from the south entrance of the room above, and haven't taken damage since mirroring to the entrance.
2. You bonk anywhere in this room.
3. You walk into the stairwell.

If you know that you accidentally armed this glitch, there is a way to stop it from happening.

1. Perform a Keydash into the stairwell, either by lining up with the bottom rail or rubbing against the edge of the doorway as you dash into it.
2. When you reach the top of the stairwell, your first movement needs to be either left or right.
3. It should now be safe to move downward without being forced back down the stairwell.