Ritual Pinnacle boss (1st time) Darkness bug

After the ladies come down and light a path with the spear/wisps, etc. When you get to the end of the path and walk through it's just darkness that kills you. I have done this probably 5 times now, and it's just death every time.

Also, if you even stick a toe in the darkness puddles on the way up that "path" or "road" the dot damage is stupid high. I feel it needs to be toned down, or the duration heavily lowered. Those wisps don't make a very big road, and it's very easy to touch the darkness and just start getting giga-life loss. But that's a critique/feed-back. The first part (above) is the bug.

I had the same bug, I saw a video that you can actually do it, when you get to phase 2, you need to run back to the phase 1 arena and you can do it, but it takes a few tries. If you don't want to wait for a fix you can try it.

https://www.youtube.com/watch?v=DOgxsZZdmGg