Copycat and Gladiator both hit Iron Man - How?

I play T1 Hood, T2 AV. On T3 I play Werewolf and my opponent plays Gladiator, hitting Iron Man. No problem. But then T4, they play Copycat, which copied Iron Man. This shouldn’t be possible, as Gladiator just proved Iron Man was on top of my deck, and Copycat should scan the bottom.

No shuffling cards were played by me, I played Falcon, SSable and Spider-Ham on T4. Is this a glitch, or is there an answer I overlooked?