[MC-307839] Wolves stop attacking their target after entering a portal when leashed

When wolves are leashed, their NBT home_pos and home_radius properties are set. When the player unleashes them, these properties are cleared.

When they are dragged into a nether portal, however, the leash breaks but these properties are not cleared, making them stop reacting and attacking all other monsters until they are edited with /data remove entity @e[type=wolf,limit=1,sort=nearest] home_radius, or they are leashed and unleashed by the player.

How to replicate, step by step:

Build a nether portal
Spawn a wolf and tame it
Use /data get entity @e[type=wolf,sort=nearest,limit=1] home_radius to confirm the entity does not have this property.
Attack a nearby enemy. The wolf will attack as expected.
Leash the wolf.
/data get entity @e[type=wolf,sort=nearest,limit=1] home_radius now returns 5
Pass through the portal so the wolf follows you, teleporting to the nether while still being leashed. The leash breaks, but the property is not cleared.
Access the nether through the same portal
/data get entity @e[type=wolf,sort=nearest,limit=1] home_radius still returns 5.
Attack a nearby enemy. The wolf will NOT attack.
Leash and unleash the wolf, or use /data remove entity @e[type=wolf,limit=1,sort=nearest] home_radius to reset its home position.
The wolf AI starts working again, attacking the mob as expected. /data get entity @e[type=wolf,sort=nearest,limit=1] home_radius now returns “not found” as it should.

Linked issues

relates to 1

MC-250059 Mobs forget their target after the world is reloaded Reopened

Comments 3

Vyoejp 2026-04-30T11:22:20Z

Refers to https://report.bugs.mojang.com/servicedesk/customer/portal/2/MC-307069

Socram 2026-04-30T13:19:06Z

@Vyoejp I don’t think they are the same bug.

In MC-307069, despite the wolf stops attacking mobs after a world reload, they’ll attack again if you hit another mob. They simply forget the target.
In this bug, however, hitting another mob will not make the wolf attack. It is a persistent AI behaviour flag that can only be solved by changing the NBT fields or leash+unleashing them.

Socram 2026-04-30T14:11:45Z

More technical information and why the bug is happening:

The reason wolves do not attack seems to be caused by net.minecraft.world.entity.ai.goal.target.TargetGoal.canAttack checking if this.mob.isWithinHome(target).
If the target (the enemy) is not within the bounding boxes defined by its home and radius position (and after travelling to the nether, it’s highly unlikely), the wolf simply does nothing.
The reason why their home_radius and home_pos are not unset despite being unleashed is the order of operations in which the teleport occurs in net.minecraft.world.entity.Entity.teleportCrossDimension:
- A new Entity copy is created in the destination world
- copy.restoreFrom(this) is called, which copies all NBT properties of the entity. At this point the entity still has the home position set.
- this.removeAfterChangingDimensions() is called which unleashes the entity and clears the home position.

The solution is very simple: the unleash operation should be performed in the teleportCrossDimension method BEFORE calling copy.restoreFrom(this).