Affects Version/s: Minecraft 1.9.4, Minecraft 1.10, Minecraft 1.10.2, Minecraft 16w38a, Minecraft 16w41a, Minecraft 16w43a, Minecraft 1.11 Pre-Release 1, Minecraft 1.11, Minecraft 1.11.1, Minecraft 1.11.2, Minecraft 17w06a, Minecraft 17w14a, Minecraft 17w17b, Minecraft 1.12 Pre-Release 3, Minecraft 1.12 Pre-Release 6, Minecraft 1.12, Minecraft 1.12.1 Pre-Release 1, Minecraft 1.12.1, Minecraft 1.12.2, Minecraft 17w47b, Minecraft 17w48a, Minecraft 18w03b, Minecraft 18w05a, Minecraft 18w16a, Minecraft 18w19b, Minecraft 1.13-pre2
Fix Version/s: Minecraft 1.13-pre5
Spider and chicken jockeys only spawn the additional mob. This means spider jockeys will only spawn the skeleton and chicken jockeys only the chicken respectively set the IsChickenJockey tag of a nearby chicken to true without a zombie spawning on it.
- Create a Superflat world with the following preset to only allow spiders to spawn
- Set the time to night
- Use the following command to get to a nearby skeleton spawned as a spider jockey
→ You will see that the skeleton is not riding a spider
Based on 1.11.2 decompiled using MCP 9.35 rc1
It looks like the method net.minecraft.world.World.checkNoEntityCollision(AxisAlignedBB, Entity) is not working correctly and counts entities riding the same entity as colliding while it should ignore them. See also net.minecraft.world.World.getCollisionBoxes(Entity, AxisAlignedBB).