Cancel EntityInteractEvent when a zombie tramples a turtle egg makes him fly on top of it.

[kacimiamine]

Expected behavior

The zombie should just continue jumping on the turtle egg.

Observed/Actual behavior

The zombie starts jumping and after a few seconds, his Y position increases, making the zombie jump while "flying" on top of the turtle egg.

Steps/models to reproduce

• Cancel EntityInteractEvent, a code example:

@EventHandler
public void onInteract(EntityInteractEvent event) {
    if (!(event.getEntity() instanceof Zombie)) return;

    if (event.getBlock().getType() != Material.TURTLE_EGG) return;

    event.setCancelled(true);
}

• Put a turtle egg and spawn a zombie
• Notice how the zombie will fly after a few seconds when trampling on the turtle egg.

Plugin and Datapack List

Fresh server, only the test plugin:

[10:15:55 INFO]: ℹ Server Plugins (1):
[10:15:55 INFO]: Paper Plugins:
[10:15:55 INFO]:  - Paper-Test-Plugin

[10:16:43 INFO]: There are 2 data pack(s) enabled: [vanilla (built-in)], [paper (built-in)]
[10:16:43 INFO]: There are no more data packs available

Paper version

[09:14:46 INFO]: Checking version, please wait...
[09:14:46 INFO]: This server is running Paper version 26.2-121-main@a2a42c5 (2026-08-29T11:32:25Z) (Implementing API version 26.2.build.121-stable)
You are running the latest version

Other

Screencast_20260901_101841.webm