Creeper AI update lag / walking into hole

Creepers Have AI bug that they had before 1.3 update and in some 1.4 snapshots (it was fixed before 1.4 release).

Their AI is lagging and they does not interact properly with environment/cats/damage.

You can reproduce it by putting Creeper after a Zombie in water canal with Snow Golem (Screenshot #2). If it starts to go against the current, it will still walk in that direction after leaving the water ignoring pathfinding and cats.

Creepers on the first screenshot walk into the void when they start fighting stream.

On the second screenshot Skeleton that was shot by Snow Golem in the stream avoid the hole. Creeper doesn't.