I ran into this issue in the Hood PVP where Invisible woman and Hulk Buster were both boosted. I used Iceman, Hulk buster as my team. I stunned the enemy hulkbuster for 4 turns, but Invisible woman casted invisibility which overrode my stun on hulk buster. He immediately punched me in the face the same turn. This is crazy, but invisibility should not override my stun on a different character.
https://forums.505go.com/discussion/60098
It’s a feature 
Use it to your advantage whenever you can.
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