If a hopper is placed under afence post, baby chickens can fit under the fence via the hopper's hitbox and escape the fence.
To recreate this issue, build a square 3x3 fence upon a 3x3 square of hoppers. Spawn baby chickens on the hoppers.
Optionally you can hold seed to tempt them out of the pen.
I do not know if this is intended.
Linked issues
is duplicated by 2
Comments 4
Why would it be intended that animals escape a fully-fenced enclosure? This seems more likely to be an unintended consequence of a badly-defined hitbox.
Because they can go under the fences! It's the consequence of hoppers having a hitbox with a bump down in the middle.
One behavior being the consequence of another behavior doesn't make either one intended.
Fences deliberately have a hitbox that extends beyond their visuals in order to block entities from jumping over them. To make that concession to gameplay and then intend for creatures to be able to escape under the fence would be contradictory. It's more likely that there's a problem with the hopper's hitbox.
Yeah, this seems intended to me.