PS4 Chaos Wastes
Ratlings can shoot through the building of the Righteous Stand building that has the treasure chest on the back of the building with the fences.
Ratlings can also shoot through various trees in the open forest section that is not a part of the base maps. The map is the one that has the fallen log the crosses over the u turn gulley before the mine area.
Sorry I don’t know the names of the maps