The bug
Lead remains attached to the fence when the mob is killed.
Steps to Reproduce:
Place down a fence and obtain a lead.
Summon a pig and use the lead to leash it to the fence.
Kill the pig and watch the leash knot closely.
Observed Behavior:
Leash knots remain attached to fences when the leashed entity is killed.
Expected Behavior:
Leash knots would not remain attached to fences when the leashed entity is killed. Instead, as soon as the leashed entity is slain, the leash knot should be destroyed.
Code analysis
Code analysis by @unknown can be found in this comment.
Linked issues
is duplicated by 16
MC-109697
Leash Knot can't be broken when the connected mobs die
Resolved
MC-133896
leads entity stays on fence if you kill the mob that the lead is attached to
Resolved
MC-157433
Lead stays on fence while creature is dead.
Resolved
MC-179799
Leash knots bug
Resolved
MC-182985
Lead Knot Entities that have nothing connected to them will desapear on reload.
Resolved
MC-184240
Lead knot stays on fenceposts when the tied mob is killed
Resolved
MC-188937
Lead remains tied to fence after mob tied to the fence is killed
Resolved
MC-205693
The material of the knots on the fence will not disappear correctly
Resolved
MC-221810
lead didn't disappear on fences when mobs died
Resolved
MC-226920
When a mob dies w/ lead on fence, the lead still appears to be attached to the fence
Resolved
MC-227440
If you kill an animal while the string tied to the animal is tied to the fence, the texture of the string will remain on the fence.
Resolved
MC-231440
Lead on Fence stays after rope is disconnected
Resolved
MC-272655
Texture from the lead stays on the fence
Resolved
MC-273030
Boats attached to a fence visually duplicated when broken
Resolved
MC-277547
Bug with a leash
Resolved
MC-278438
The lead will be still attached when we use command to kill the allay.
Resolved
Attachments
Comments 38
Doesnt really sound like a bug... seems like this should happen. as long as the mob that was killed isnt stuck on his side still tied to the post till you break it, and then disaapears.
Confirmed in 1.6.1
Related to MC-15084. Both bug reports are about leashed mobs being killed.
Duplicate of MC-14004.
No, this is a different issue. That one refers to a player death, this one refers to the death of the leashed mob.
Still present in 1.8.
can confirm in 15w45a
Still an issue in 16w33a
Confirmed for 1.13.1.
Confirmed for 1.13.2-pre2.
@MisterSanderson, 1.8 bugs are not accepted anymore. 1.13.1 and 1.13.2pre2 and (FUTURE UPDATE) 1.14 bugs are accepted
in 1.15 pre 6
Confirmed in 20w20b
Confirmed in 1.16 Pre-release 2.
Confirmed in 1.16-pre3.
Confirmed in 1.16-pre4.
Confirmed in 1.16-pre5.
Confirmed in 1.16-pre6.
Confirmed in 1.16-pre7.
Confirmed in 1.16.3
Can confirm in 20w51a.
Can confirm in 21w03a.
Can confirm in 21w05b.
Based on yarn 21w05b mappings: at net.minecraft.entity.mob.MobEntity.detachLeash() the leash is removed, however no check is in place for the leash knot:
public void detachLeash(boolean sendPacket, boolean dropItem) {
if (this.holdingEntity != null) {
this.holdingEntity = null;
this.leashTag = null;
if (!this.world.isClient && dropItem) {
this.dropItem(Items.LEAD);
}
if (!this.world.isClient && sendPacket && this.world instanceof ServerWorld) {
((ServerWorld)this.world).getChunkManager().sendToOtherNearbyPlayers(this, new EntityAttachS2CPacket(this, null));
}
}
}Fixing it might be as simple as adding the following near the top of the function:
if (holdingEntity instanceof LeashKnotEntity) {
this.holdingEntity.remove();
}Can confirm in 21w06a.
Can confirm in 21w07a. Video attached.
Can confirm in 21w11a.
Can confirm in 21w14a.
Can confirm in 21w15a.
Can confirm in 21w17a.
Can confirm in 1.17.
Can confirm this behavior in 21w39a. Here are some extra details regarding this problem.
The Bug:
Leash knots remain attached to fences when the leashed entity is killed.
Steps to Reproduce:
Place down a fence and obtain a lead.
Summon a pig and use the lead to leash it to the fence.
Kill the pig and watch the leash knot closely.
Observed Behavior:
Leash knots remain attached to fences when the leashed entity is killed.
Expected Behavior:
Leash knots would not remain attached to fences when the leashed entity is killed. Instead, as soon as the leashed entity is slain, the leash knot should be destroyed.
Can confirm in 1.18.2 and 22w18a.
Can confirm in 1.19.
Can confirm in 1.19.2.
In 1.20.3
Can confirm in 1.20.4 Release Candidate 1
Confirmed in 13w21b.