Animals being lead stop following after line of sight with player is broken.

When leading an animal with food, the animal immediately stops following if line of sight with the player is broken. This makes it nearly impossible to consistently lead one block tall animals like pigs and chickens up a block as line of sight is broken as soon as the player is one block above them.

In the attached screenshot the chickens are unable to see the player standing one block above them so they are no longer following the seed.