From 82f4d6d15006e4980cee1d2645bf24c35c0c23d2 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 29 Jul 2018 11:58:05 -0400
Subject: [PATCH] Always process chunk registration after moving

This will help guarantee that entities are always in the
chunk that they are currently located at.

diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 3a4c9a02e..c8f32a49a 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -338,6 +338,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         this.locX = d0;
         this.locY = d1;
         this.locZ = d2;
+        if (valid) world.entityJoinedWorld(this, false); // Paper - ensure Entity is moved to its proper chunk
         float f = this.width / 2.0F;
         float f1 = this.length;
 
@@ -956,6 +957,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         this.locX = (axisalignedbb.a + axisalignedbb.d) / 2.0D;
         this.locY = axisalignedbb.b;
         this.locZ = (axisalignedbb.c + axisalignedbb.f) / 2.0D;
+        if (valid) world.entityJoinedWorld(this, false); // Paper - ensure Entity is moved to its proper chunk
     }
 
     protected SoundEffect ad() {
diff --git a/src/main/java/net/minecraft/server/EntityLeash.java b/src/main/java/net/minecraft/server/EntityLeash.java
index f2d3d0b4c..f20060614 100644
--- a/src/main/java/net/minecraft/server/EntityLeash.java
+++ b/src/main/java/net/minecraft/server/EntityLeash.java
@@ -31,6 +31,7 @@ public class EntityLeash extends EntityHanging {
         this.locX = (double) this.blockPosition.getX() + 0.5D;
         this.locY = (double) this.blockPosition.getY() + 0.5D;
         this.locZ = (double) this.blockPosition.getZ() + 0.5D;
+        if (valid) world.entityJoinedWorld(this, false); // Paper - ensure Entity is moved to its proper chunk
     }
 
     public void setDirection(EnumDirection enumdirection) {}
diff --git a/src/main/java/net/minecraft/server/EntityShulker.java b/src/main/java/net/minecraft/server/EntityShulker.java
index 95c6cd897..bc11e7da2 100644
--- a/src/main/java/net/minecraft/server/EntityShulker.java
+++ b/src/main/java/net/minecraft/server/EntityShulker.java
@@ -385,6 +385,7 @@ public class EntityShulker extends EntityGolem implements IMonster {
                 this.locX = (double) blockposition.getX() + 0.5D;
                 this.locY = (double) blockposition.getY();
                 this.locZ = (double) blockposition.getZ() + 0.5D;
+                if (valid) world.entityJoinedWorld(this, false); // Paper - ensure Entity is moved to its proper chunk
                 this.lastX = this.locX;
                 this.lastY = this.locY;
                 this.lastZ = this.locZ;
-- 
2.18.0