Fishing objects

What I expected to happen was fishing objects in this new version of the game.
But there is a problem about that. I can get all kind of fishes without any problem. But I get no objects (juck or treasures).

When I try to fish an object (even with the "Luck of the Sea III"), the bobber is on the water and when something catch it, it dips. But when I right-click then, sometimes, nothing is coming. When it's a fish, I get it, but I guess when it's an object, nothing come up from the water.