Thank you for trying out my game! Yes, the gravity and jump delay seem to be acting differently than they were when I was developing. Re-creating the Pop framework's physics engine is definitely proving to be the hard part of this one because it's so weird. Flying is absolutely a bug, but I didn't notice where to log it. If you're up for it, you can download the original game from the Itch.io page to get a sense of what the gravity is supposed to be like.