Found a odd bug, but nothing game breaking, if you are doing the "ritual" with Tess by a door you can leave the room while still being in the ritual. To fix it you just have to quit the scene so it doesn't harm anything but immersion.
I am have recently faced an issue in game. So what happened was that I was speedrunning the game using the cheat codes to complete faith's quest. I captured Thundergirl in Left Hallway 2nd floor. I immediately went to the third floor's girl washroom to test the Old Legend, but after trying I returned to the second floor to see Thundergirl fly towards me and vanish as soon as I pressed the E button. This has happened with me for the first time