From 878acd1cb814ad0b38a0d3c210dd5b388d8ec459 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 78e85aacf..f5f1452b7 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1107,7 +1107,7 @@ 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.chunkX;
         int j = entity.chunkZ;
 
@@ -1115,6 +1115,7 @@ 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