From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Hugo Manrique <hugmanrique@gmail.com>
Date: Mon, 16 Jul 2018 12:42:20 +0200
Subject: [PATCH] Avoid item merge if stack size above max stack size


diff --git a/src/main/java/net/minecraft/server/EntityItem.java b/src/main/java/net/minecraft/server/EntityItem.java
index 5efcc50ab9e8a99d88a9d2e7f15ecbcc4439b93e..e5c9bac88a59d52c9b2f05df3e4f373edbe009ca 100644
--- a/src/main/java/net/minecraft/server/EntityItem.java
+++ b/src/main/java/net/minecraft/server/EntityItem.java
@@ -170,6 +170,10 @@ public class EntityItem extends Entity {
 
     private void mergeNearby() {
         if (this.w()) {
+            // Paper start - avoid item merge if stack size above max stack size
+            ItemStack stack = getItemStack();
+            if (stack.getCount() >= stack.getMaxStackSize()) return;
+            // Paper end
             // Spigot start
             double radius = world.spigotConfig.itemMerge;
             List<EntityItem> list = this.world.a(EntityItem.class, this.getBoundingBox().grow(radius, radius, radius), (entityitem) -> {
