What I expected to happen was...:
The boat disappears and you are teleported to the right place.
What actually happened was...:
You become invisible, you fall through the ground. When it reaches the height -66.05000 you stop and cease to interact with the world.
Steps to Reproduce
- Put the boat abroad of the world.
- Sit down in it.
- Go to the edge of the world, sitting on the boat.