Spawning in the right place not in the right height..

Sometimes, while you are playing in survival,(haven't tried on creative)
you spawn on the right location but not in the right height.
I doesn't always happens, it's kind of random when it happens, anyway..

Steps to Reproduce:
1. You stay in a place.
2. Get out of the App, but first need to get out of the world.
3. And you are; up in the surface, if you a caving or up in the roof of your house, if you're at home.
(THIS DOESN'T ALWAYS HAPPENS, IT IS RANDOM)