Decided to go to hub, but then I somehow glitched through the floor down into the sorcerer area. Everything was still able to be collected down there even though i didn’t find all the runestones, just one. This might be preventable if you make sure the player has all the stones and should be down there collecting things. This will probably happen in every region, just depends if the person is laggy or not. I play on a gen 8 iPad with a PS4 controller.
Here’s a video showing this: FullSizeRender