Goyle glitch: During the Goyle transformation scene, hold up-left. When the screen transition to the next scene occurs, you should find your camera pointing at a cubicle door from inside the cubicle. You've successfully escaped the trigger for the scene, and you now control Harry. But... well, read the notes below.

-Leaving the bathroom causes a loading screen. This means that if you die or (after having autosave on) quit and load, you'll just spawn back to leaving the bathroom. Unfortunately there is no way to die in the bathroom, so we don't know if dying in there would do anything, and quitting and loading in the bathroom just restarts the cutscene

-Lockhart's Office remains locked

-You can still retry lessons and races as normal

-As the Gryffindor Common Room is already unopenable because you should have skipped the password-learning due to the Wrong Warp, there is nothing we can do here. The Library is also still locked

-Collecting something (I tested this out with a card in a secret room) continues as normal

-I've skipped a trigger before (where the Basilisk snarls "Let me kill you" before you go to Defence Against the Dark Arts), and I had a little mess around with it. I exited the room into the area with the Common Room door, then entered the room, and triggered the little scene, and there was no sound and Harry just stayed there. I tried seeing if this might do something weird with cutscenes, so I went back to the bathroom and triggered the cutscene you glitch out of, but it was normal. Nothing to gain from triggering any other cutscene

Conclusion: Unless you can run out of health as soon as the snake in the duel dies so that as soon as you spawn, you die in the bathroom, which is probably impossible, there is nothing useful that can be produced from the glitch, as everything seems to be working as if you're just roaming around the place as normal. My theory about this is that you are always Harry in that cutscene, but after the transformation scene is finished, you, as Harry, are spawned directly in the trigger zone for the next cutscene, but as you hold up-left, you run away from the trigger

Messing around with Wrong Warp: -Collecting a card did nothing

-WingLev shows the 'Triangle - Drop' 'X - Levitate', but the time limit bar is cut off, due to the 'cinematic' camera you get stuck with

-I went back to the last loading screen, and the HUD returned to normal, then I went back. Everything was as it should be if I re-entered . Enemies had respawned and wouldn't give beans as I had already defeated them, and washing machines/WingLev-able objects had been spawned in their normal place, but the pads were already pressed down. The log was also already knocked over, and the card I collected wasn't there (not sure what the crates did, though). I opened the gate to Ginny, and the screen went cinematic for a moment, and I ended up in the Common Room as if I had done the WW normally

-Dying caused the small death scene. I pressed 'Continue' and returned to the previous loading screen as if nothing happened, and I had to do that section all over again