The bug
The method net.minecraft.entity.EntityLiving.onInitialSpawn(DifficultyInstance, IEntityLivingData) (or rather the methods overriding it) does not check if the additional mob for spider or chicken jockeys collides when they are spawned.
This report is not about ridden entities not considering the passenger height when moving, suffocating the passengers. That is reported as MC-477.
How to reproduce
Create a Superflat world with the following preset
minecraft:stone,minecraft:air,2*minecraft:stone_slabSearch for Skeletons
/execute as @e[type=skeleton] run data modify entity @s Glowing set value 1b❌ The head of the Skeletons riding the spiders is inside the slabs
Affected classes
Based on 1.11.2 decompiled using MCP 9.35 rc1
Class | Description |
|---|---|
EntitySpider | Spawned skeleton |
EntityZombie | Spawned chicken |
Linked issues
Comments 4
@@unknown, I removed your attachment and edited your comment because it looks like you misunderstand the report. To be fair, it was not super obvious, without knowning what the methods do, what exactly the report was about. I hope it is clearer now.
This report is only about the spawning of these mobs. Their movement and suffocation resulting from it is described by MC-477.
Is this still the case now that MC-103516 is fixed?
confirmed for 1.13.2edit: you can see the skeleton is suffocating as the spider climbs the wall