From 8695afeaff8a60bc42ea5aca6cf889515b0f9a43 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 7bd5a0a8cd..f2ca391bfe 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -416,6 +416,7 @@ public class Chunk implements IChunkAccess {
         entity.chunkY = k;
         entity.chunkZ = this.loc.z;
         this.entitySlices[k].add(entity);
+        this.markDirty(); // Paper
     }
 
     @Override
@@ -442,6 +443,7 @@ public class Chunk implements IChunkAccess {
             return;
         }
         entityCounts.decrement(entity.getMinecraftKeyString());
+        this.markDirty(); // Paper
         // Paper end
     }
 
-- 
2.21.0