Found two bugs regarding some endings. Though for the first one of them, I don't know if its really the bug or intentional, but either way, I honestly hope doesn't get patched cause it seems pretty fun.
1. During the part of the Soulless Ending, if you save your game as Unknown and then complete the ending. When you come back to that loaded save as her. You can play as her throughout the game. Still will have the same dialogue options and cutscenes as Anne but still fun to play as her in the whole game in the form of an overworld sprite~. Or a full on update if possible, though that may be asking for too much. Still a fun thought though~
2. After you complete all 4 of the secret codes for the Artifact Ending. After you unlock the door to the basement and get the option to enter or not, if you choose not to enter. You walk away, and then the screen get stuck in black void. Only ever reverting back to normal after closing the game. Is there something wrong in the Artifact Ending?
Forgot two others! The third I found was in the gallery/museum, where the True ending's name is shared with the same name as the Glutton's Ending (Ending 2). That name being "Gutslut" which should be for Ending 2
The fourth I found was regarding the mirror not matching your character's appearance when she gets her clothes back after defeating the Beast. Any mirror you look at still reflecting Anne with her massive plump breasts despite wearing new clothes in the aftermath.