Boat disappeard after leaving it while being in the water

After appearing in the overworld I have notice after walking in  any direction, large chunk of land  rendering in the distance (islands), so to explorer  them, I create a boat, after arriving to the coast  and get off the boat, the boat vanishes and is nowhere to be found, it also happens if get of the boat in the middle of the water, the boat, simply disappears, i try to look around to find  it and  just reminds missing.