Wall adjacent to open door does not have its door-facing surface rendered, causing the player to see

[Trafalgar]

As per subject. Screenshot demonstrating: https://dl.dropboxusercontent.com/u/26452959/OpenDoorNotRenderingWallError.jpg

The door is occupying the space under the ice crystals, above the hardened hull below them. You can see where there's a wall next to the door, but the inside edge next to the door is not being rendered.