I have already previously beaten The 12 Palaces, but I noticed yesterday during a playthrough that there are issues with water sections as it pertains to the Flippers. After getting the Flippers from the Palace of Mysteries and going back through the warp tile in the Water Palace for the Boss Key, I almost couldn't reenter the POM to finish the palace because the Flippers won't let me come out of that little "moat" surrounding the POM's entrance. Luckily I just burned myself with the Candle and used the invincibility frames to reenter the POM that way. Then later in the Palace, I came to the almost entirely water room where you fight a Manhandla. I beat the Manhandla and tried to go north to get the palace's last key, but again, I couldn't get out of the water to leave the room. Ironically enough, I can exit this room to the east with no issues, but for some reason, the game won't let me get on the walkable tiles in waterlogged rooms from the north or the south. I can't burn myself with the Candle in this room because there are only three walkable tiles in the room and they are too far from the north door.....I suspect this is a bug?