Maybe bug? Final Scene

I was unable to climb on top of the altar for the longest time, then I selected an inventory item, and then I was able to climb the altar.
This is a clip of me finally doing it
https://www.twitch.tv/darkshoxx/clip/DaintyHumblePuppyWoofer-mabidpfMS7RuQY80
(Win 11, V 0.5.1)