It's the angle. Camera is positioned low, and we are looking up at it. The head is tilted way back, so we're not seeing the dome. It's all there, wasn't a wild new shape or anything. But the dome does have a new design to it that you'll all see clearly with more footage/marketing. The context of the scene will make a lot more sense when you all can see it in its entirety. Xeno is just in an odd position.