Hm that’s strange. When you get to the end (the tent) you’re meant to see a cutscene sort of thing. Could you describe if you did something that may have been unusual to cause the bug?
Maybe I grabbed the land from far away without moving and the trigger might only be if you are moving yourself and not just the ice? That's the only thing I can think of, it was very classic other than that. Like no weird strat to go fast