Playing Wraith yesterday I noticed that I could sneak attack without playing the animation. I’m not sure exactly why it was happening, but it was fairly consistent. I would crouch then pounce, and my animation would just show me as crouched but the hunters would take damage as if i was attacking.
I’ve also been able to use sneak attack to get inside of a dome after it was dropped. Not sure if monsters are supposed to be able to enter a dome, I know hunters can, but the team I was playing against said it wasn’t supposed to work that way.