I found 2 funny bugs
Infinite jump bug, you have to put a floor under you, remove it and right after start jumping, you will be floating.
Island fall bug, the crate islands fall sometimes when you take the crates on them and they hit something like a floor. They fall down. If it happens but theres still a crate you are guaranteed to find it in 2 situations: Infinite loophole where it falls from one realm to another or it just sits in the dark realm.
Edit: I see many people mentioning the infinite jump glitch but they refer to removing an item under you and thats much harder because most items are not that thick and dont stay still. So I personally think that the way I do it is the best because the floors do stay mid air and they arent tilted like 90 degrees unlike a wall/window which I saw someone mention..
P.S dont go too far out or the player will get deleted/unloaded, this happened to others