A bug related to the grappling hook, that if you hook an object then jump into the water, you will get the item and the grappling hook will not take durability. Hope this helps!
There is a bug where if you and a friend try to remove a item at the same time (say a chest for example) you will both get that item. (same goes for a chest full of supplies you both will get everything that was in the chest) Hope this helps!