Affects Version/s: Snapshot 13w03a, Snapshot 13w04a, Snapshot 13w05a, Snapshot 13w05b, Snapshot 13w06a, Snapshot 13w07a, Snapshot 13w09a, Snapshot 13w10a, Snapshot 13w10b, Minecraft 1.5, Minecraft 1.6.2, Minecraft 1.7.2, Minecraft 1.7.5
Fix Version/s: None
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.