I am sorry if this is a repost as I saw this happen yesterday. I could not find the original post. When in the arena I had a glitch where I could not see or use my actions but I could swap. It happened twice with the same dinosaur, Edmontosaurus. The first time I swapped and it was fine, my actions appeared for my new dinosaur. However, after using edomontosaurus again the same glitch occurred. I ended up losing but I am more worried about using this dino in future battles.