It was designed this way. Most cars have been doing this for years. The idea is for the people who never use the a/c system. This way, when you start the car on, the compressor kicks on so the oil/refrigerant will flow through the system. The old manual climate control systems were the same way. Remember when you had to slide a bar from "off" to "a/c", then "heat" was the last option? Well, it was the same theory. That way, when you went from "off" you had to go through the "a/c" setting first, even if you wanted to go to "heat" or "vent". Even though you may slide the lever right through "a/c", it was enough to move the oil/refrigerant just a little bit, helping to extend the life of your compressor.
