Fall from the sky in initial spawning point when I log in my world

Most of the times I begin playing on my Survival World (both offline and Realms versions) instead of spawning in the last place I was before logging out I fall from the sky directly above the initialiworld spawn point. When I click "respawn" I spawn on the roof of my base (far from the world spawning point) instead of the bedroom.

This makes the game absolutely unplayable.