EntityShootBowEvent: projectile.getVelocity() returns zero vector when shooter is not a player

[mintychochip]

Expected behavior

A vector of the arrow's velocity

Observed/Actual behavior

Steps/models to reproduce

1. Start a fresh or existing Paper server
2. Register a listener for EntityShootBowEvent that logs event.getProjectile().getVelocity()
3. Spawn a skeleton, wait for skeleton to shoot at a target
4. Observe the logged velocity of the arrow

Plugin and Datapack List

Just a test plugin, with this handler

static final class BowListener implements Listener { @EventHandler(priority = EventPriority.MONITOR,ignoreCancelled = true) private void onShootBow(final EntityShootBowEvent event) { LivingEntity entity = event.getEntity(); if (entity instanceof Player) { return; } Bukkit.broadcast(Component.text(event.getProjectile().getVelocity().toString())); } }

Paper version

This server is running Paper version 1.21.4-232-ver/1.21.4@12d8fe0 (2025-06-09T10:15:42Z) (Implementing API version 1.21.4-R0.1-SNAPSHOT)
You are running the latest version
Previous version: 1.21.3-82-5a60ffb (MC: 1.21.3)

Other

No response

[zihenzzz]

i want to fix it.