From dd6dc076e44e550e1851252e0d23ae0e3ad813c0 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 edae53b82..42b76b212 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -716,6 +716,7 @@ public class Chunk implements IChunkAccess {
         entity.chunkZ = this.locZ;
         this.entitySlices[k].add(entity);
         // Paper start
+        this.markDirty();
         if (entity instanceof EntityItem) {
             itemCounts[k]++;
         } else if (entity instanceof IInventory) {
@@ -747,6 +748,7 @@ public class Chunk implements IChunkAccess {
         if (!this.entitySlices[i].remove(entity)) {
             return;
         }
+        this.markDirty();
         if (entity instanceof EntityItem) {
             itemCounts[i]--;
         } else if (entity instanceof IInventory) {
-- 
2.21.0