For the tutorial bug it’s because the obj_hallway in PP_room9 has a length that goes in the decimals.
For the crash, I dont remember really what happend since it crashed so fast I couldn’t even prossess what I did, but it definitely happend after I paused the game. Then it’s the part I don’t remember... I most likely went in the settings (it’s litteraly obj_mainCONFIG) and after that I think I pressed the X button with my Xbox controller. I hope this helps, but honestly it could just be that my 2$ computer couldn’t read the code of the game properly.
I also noticed that Peppino uses spr_playerM_climbwall when he is climbing a wall. And when breaking secret destroyable blocks, the game lags (it seems like it’s mostly any of the darkest tiles that make it lag). After killing John in the tutorial, if you re-enter the room where he was, he will reappear and if you kill him again after your time is at 00:00 it causes really weird stuff. One last thing: if you play as the Noise and try to see Vocode, this handsome npc will PERISH...