From a25472bc5e97fb4bc871d21cc6f3068f9cab0489 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 28 Jul 2018 12:09:20 -0400
Subject: [PATCH] Always process chunk removal in removeEntity

Spigot might skip chunk registration changes in removeEntity
which can keep them in the chunk when they shouldnt be if done
during entity ticking.

diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 811311e9e..1d7188b2e 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1173,7 +1173,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
             this.everyoneSleeping();
         }
 
-        if (!guardEntityList) { // Spigot - It will get removed after the tick if we are ticking
+        // if (!guardEntityList) { // Spigot - It will get removed after the tick if we are ticking // Paper - move down
         int i = entity.ae;
         int j = entity.ag;
 
@@ -1181,6 +1181,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
             this.getChunkAt(i, j).b(entity);
         }
 
+        if (!guardEntityList) { // Spigot - It will get removed after the tick if we are ticking // Paper - always remove from current chunk above
         // CraftBukkit start - Decrement loop variable field if we've already ticked this entity
         int index = this.entityList.indexOf(entity);
         if (index != -1) {
-- 
2.20.0