Structures spawning outside of the map in Dead Dawg Saloon

Desbear

Running Windows of Opportunity I could see a vault location spawning outside of the boundaries of Dead Dawg Saloon. Maybe it's relevant to point out that the killer was Pig, can't say if her jigsaw boxes spawns were also problematic since she was running Ruleset Nº2 and my trap never activated.

Here are screenshots of the vault.

I don't know if it's relevant or not, but the other 2 survivors were a Claudette and a Leon.

My guess is that it's a Z wall since there's no pallet when I walked closer to it and since it's on the very edge of the map.