while using the new boats (with a creeper in the back) I went into f5 mode with the camera facing me. as i was sailing and i reached an unrendered chunk and sailed into it, but fell like i was walking into an old school world hole. i hit shift to exit the boat and moved my camera to render the area only to have me and the creeper appear on the surface. the boat, about 15 blocks under the water, was still slowly sinking, and every time i tried to enter the boat, it would teleport about 1 block in the -z direction and 1 block in the -y direction. i spam right clicked and chased it to the bottom of the ocean. once it was on solid ground, every time i right clicked it it teleported me about 1 block in the +z direction and 1 block in the +y direction. here is some screens of the boat tping me