The new Toxicroak has a bugged interaction with Shaymin Sky

I was trying out a Shaymin Sky/Clodsire/Toxicroak deck and noticed that Toxicroak still had a retreat cost with Shaymin Sky on the bench. Toxicroak has a 1 retreat cost so it should be a free retreat with it on the bench. Not sure if it was because Toxicroak had a rocky helm on it or just an interaction in general because in both instances it had a rocky helm. It's the Toxicroak from the new set as well with the enhanced poison - kind of a bummer since a big amount of my game plan revolves around that free retreat.