Rabbits huddle in corners instead of moving about. Even if I scatter them about, they always find their way right back to that corner. Other mobs also have similar problems, such as every pig, chicken, sheep, horse, and even golem, traveling to one corner of my giant island, even they had spawned on the complete opposite. It's bazar and annoying to walk around an empty island when all the animals wander to just one corner of it. If I lead the animals back, they eventually wonder back to the corner. I don't understand.