From 37c0cfe11574838ad8c24863a4b926e0b88878d5 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 23 Jul 2018 22:18:31 -0400
Subject: [PATCH] Mark chunk dirty anytime entities change to guarantee it
 saves


diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index b31c301ec..6de053781 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -683,6 +683,7 @@ public class Chunk {
         entity.ad = this.locZ;
         this.entitySlices[k].add(entity);
         // Paper start
+        this.markDirty();
         entity.setCurrentChunk(this);
         entityCounts.increment(entity.entityKeyString);
         if (entity instanceof EntityItem) {
@@ -725,6 +726,7 @@ public class Chunk {
 
         // Paper start
         if (!this.entitySlices[i].remove(entity)) { return; }
+        this.markDirty();
         entity.setCurrentChunk(null);
         entityCounts.decrement(entity.entityKeyString);
         if (entity instanceof EntityItem) {
-- 
2.18.0