Re: newest update, the "?" nodes still seem to freeze the dungeon progression, but now after you choose them a couple of times (inbetween unlocking Prinhxa and getting the freeze, I could choose the node about two times before the dungeon froze again).
Also fun fact - if you get a freeze with these nodes, you can still leave the dungeon with the newly added exit button, and then come back. When you do, the dungeon will work as usual, provided you don't choose another "?" node, then it freezes. Which means, you can softlock yourself, if you end up without an option of choosing another node.

