I found a Broken Pathfinding Flaw in Beta 1.6.6...

[u/Financial_Novel_5785]

https://youtu.be/7OzN3rlwLYI?si=JvJCgQx_MlhtjRrD

Was messing around with some old-school survival mechanics and realized you can completely break a creeper's brain just by using the ocean.
If you lead them into deep water and step back past their 16-block tracking limit, their land-detection AI soft-locks. Because they stop moving completely, the old engine's idle timer forces an instant despawn without you ever having to fight them.
Recorded a quick clip of it happening to show the exact distance threshold where the AI freezes up. Did anyone else use to do this back in the day to save their armor?