I started a new Forsaken character recently and was doing the loop around to get to Wing's Rest. I grabbed the potion in front of the door to the Temple of Silence. Upon reaching the area where Demi usually is, I activated the lever for the shortcut to the Save Crystal for Hollow Basin, but had not interacted with it whatsoever.
I spoke with Demi and got taken to Wings Rest, however once I arrived there I could not speak with Demi, Sheryl or Clive, however Etna was able to be spoken with. Thinking it was a strange bug, I went back to Hollow Basin and went back through the door near Demi, and she was still there and offered to take me to Wings Rest again.
At this point I quit and reloaded, and was back in Wings Rest, however the Save Crystal acted as if I had never interacted with it (which is odd since to even be there I would have had to save). The NPCs still are unable to interact with. Even stranger, upon reload and heading back to the door near Demi, it was now closed, and I had to go open it again, however this time she was not there. Going back to Wings Rest. everything was working as intended once again.
On another note, the Health Potion I had grabbed in front of the Temple of Silence had respawned, and the wooden barricade you have to break for progression had also respawned. By no means is any of this game breaking, but it was all very strange and felt it worth mentioning. I unfortunately don't have video of Demi still being there with the door opened, but I recorded everything after my first reload and cut to the more important parts in the video.
(apologies for video quality, I had my recording settings insanely high for some reason and no matter what I did compression kinda artifacted the hell out of the video, maybe it adds to the VHS filter charm)