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.
P.S dont go too far out or the player will get deleted/unloaded, maybe this happened to you