The fireplaces in the new Goldbrook map have 2 walls, the inside wall and the outside wall. The inside wall you can walk through and stand inbetween the outside wall which allows you to see what’s on the outside of the fireplace, but you can not shoot/interact with anything on the outside just see them.
I believe your model is also hidden as the inside wall has the brick graphics that block vision of your character, but does not block projectiles.
Youtube link: https://youtu.be/QsBc8D3DyiA

