Yup its part of the game. Thats why your supposed to read the wiki and the zillion other tutorial guides everyone constantly tells people to read. It explains right in the guide make sure your base is fully tiled.
Logging out and back into the game forces spawn to nearest nature tile. If you didnt tile your base fully then by placing floor tiles on the outside it makes the nearest nature tile inside your base. This is part of the game and has been around forever. Hopefully now you will never make that mistake again and maybe consider reading the wiki to avoid future mistakes.