Zombified Piglins occasionally spawn with a permanent "refusal to ride" bug (affects Boats, Minecarts, etc.)

In version 26.0, a new entity spawn trigger spawn_baby_jockey was added alongside spawn_adult and spawn_baby. However, zombie piglin jockeys spawned with this trigger cannot be picked up or transported by minecarts. This breaks many redstone contraptions that rely on minecart-based sorting or killing chambers, severely limiting player creativity and potentially causing massive entity buildup and world lag.

​Observed Results:

A small percentage of Zombified Piglins spawn in a state where they are completely unable to enter any rideable entities, such as Boats and Minecarts. This is a persistent state that can be saved and re-loaded via Structure Blocks. Other mobs do not exhibit this issue.

​Expected Results:

All Zombified Piglins should be able to enter vehicles.

1.Steps to Reproduce:

​Set up a Command Block to repeatedly spawn Zombified Piglins in a 1x1 space.

​Place an Activator Rail and a Minecart directly above the spawn point.

​Power the rail to make the Minecart vibrate.

​Normal Piglins will be picked up and ejected to the corner, but Bugged Piglins will remain at the spawn point, ignoring the vehicle.

​Save the bugged Piglin with a Structure Block and reload it; the behavior persists.

2.otherway to reproduce:

Build the setup as shown:

Place an activated rail on top of a redstone block.

Place a minecart on the rail.

Surround the minecart with blocks (e.g., glass) on all four sides.

In the northeast corner, place a soul sand block, put a wither rose on top of it, and surround it with blocks to simulate a mob transport/killing system.

Spawn zombie piglins by right-clicking repeatedly with a zombie piglin spawn egg above the minecart. Observe that a very small proportion of them (approx. 75/10000) cannot enter the minecart.

3.or you can summon a zombie piglin with the spawn_baby_jockey trigger using the command:

/summon zombie_pigman ~ ~ ~ ~ ~ spawn_baby_jockey

Attempt to move the minecart or have the piglin enter it.

This bug still not fixing even in preview version