Have you all experienced the end of level not triggering after collecting the stone and mask? I thought maybe it was tied to how I was skipping the dialogue but that doesn't seem to be it. Is there some trick or trigger I'm maybe missing? Thanks!

This happens to me all the time. I still haven't figured it out :(.

Same here, I have tried a lot of different testing to figure out a consistent way to finish the game but I have had no luck yet.