When flying above world hight and you approach the end of the world you can pass the end of world and walk on it .

What I expected to happen was that I would stop and not be able to fly out of the world .

What actually happened was that I flew out and could walk on it too.

Steps to Reproduce:
1. Fly up placing blocks until you cant place anymore .
2. Look up and fly to the end and your going to fly out .
3. This also happens in survival