The cut scene where the voice of the absolute forces the party to its knees and SH's artifact drives it off. This happens just before the overland map is revealed.
I’m aware this is wandering off topic, but hopefully just a quick digression for clarification. I usually get this scene on entering the goblin camp, so see it very much as mid-Act 1, in the lead-up to the confrontation with the goblin leaders.
But IIRC in previous releases it used to happen instead when getting towards the edge of the area map for the first time. But perhaps the triggers are actually the same, and in earlier runs I’d coincidentally ventured up the gulley to the side of the goblin camp that leads to the world map so got the scene then, whereas lately I don’t bother and just head straight to the camp?