In the Rendezvous mission "Be a Beta", I've found an interesting, probably unintended thing. When the robo cats are called after beating Banana, I had two of them spawn on the same tile. They seemed to have issues with movement, in that it just didn't happen. Additionally, attacks aimed at the tile damaged both creatures on the tile. I only had two attacks that went off in that instance, a counter and Night Sword. Counter did the animation once but damaged both creatures, while Night Sword played the animation twice and damaged both creatures.
Once they were killed, they became chests as they normally do. Curiosity got the better of me and I collected a chest, just for it to get stuck after collecting the first.
I may be wrong, but I do believe one of the robo cats spawns in where Banana was at upon death. If that's the case, to replicate just have Banana on a spot where one of the other robo cats spawn and kill her.
Once they were killed, they became chests as they normally do. Curiosity got the better of me and I collected a chest, just for it to get stuck after collecting the first.
I may be wrong, but I do believe one of the robo cats spawns in where Banana was at upon death. If that's the case, to replicate just have Banana on a spot where one of the other robo cats spawn and kill her.