I don’t know if this counts as a bug, but the "Air-Filtration Device " is a helm skin that is identical to the “Metal Aquabreather” skin. I don’t know how to add pictures, but they look the same side by side in the inventory. This makes confusion between the two easy (although I understand it could have been avoided if I’d previewed the item). You wouldn’t make a hammer that looked exactly like an axe, right?