From c31f3e86f6647a66fe4ab95da3ab06921900bd31 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Thu, 23 Aug 2018 09:25:30 -0500
Subject: [PATCH] Fix MC-124320


diff --git a/src/main/java/net/minecraft/server/Block.java b/src/main/java/net/minecraft/server/Block.java
index c674aa13d8..2e460a7f63 100644
--- a/src/main/java/net/minecraft/server/Block.java
+++ b/src/main/java/net/minecraft/server/Block.java
@@ -154,6 +154,7 @@ public class Block implements IMaterial {
         return tag.isTagged(this);
     }
 
+    public static IBlockData getValidBlockForPosition(IBlockData iblockdata, GeneratorAccess generatoraccess, BlockPosition blockposition) { return Block.b(iblockdata, generatoraccess, blockposition); } // Paper - OBFHELPER
     public static IBlockData b(IBlockData iblockdata, GeneratorAccess generatoraccess, BlockPosition blockposition) {
         IBlockData iblockdata1 = iblockdata;
         BlockPosition.MutableBlockPosition blockposition_mutableblockposition = new BlockPosition.MutableBlockPosition();
diff --git a/src/main/java/net/minecraft/server/EntityEnderman.java b/src/main/java/net/minecraft/server/EntityEnderman.java
index 139a70ca3b..e4aba0e0a8 100644
--- a/src/main/java/net/minecraft/server/EntityEnderman.java
+++ b/src/main/java/net/minecraft/server/EntityEnderman.java
@@ -305,8 +305,9 @@ public class EntityEnderman extends EntityMonster {
             if (block.a(TagsBlock.ENDERMAN_HOLDABLE) && flag) {
                 // CraftBukkit start - Pickup event
                 if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(this.enderman, blockposition, Blocks.AIR.getBlockData()).isCancelled()) {
-                    this.enderman.setCarried(iblockdata);
+                    //this.enderman.setCarried(iblockdata); // Paper - moved down
                     world.setAir(blockposition);
+                    this.enderman.setCarried(Block.getValidBlockForPosition(iblockdata, this.enderman.world, blockposition)); // Paper - Fix MC-124320
                 }
                 // CraftBukkit end
             }
@@ -316,6 +317,7 @@ public class EntityEnderman extends EntityMonster {
 
     static class PathfinderGoalEndermanPlaceBlock extends PathfinderGoal {
 
+        private EntityEnderman getEnderman() { return this.a; } // Paper - OBFHELPER
         private final EntityEnderman a;
 
         public PathfinderGoalEndermanPlaceBlock(EntityEnderman entityenderman) {
@@ -335,7 +337,7 @@ public class EntityEnderman extends EntityMonster {
             BlockPosition blockposition = new BlockPosition(i, j, k);
             IBlockData iblockdata = world.getType(blockposition);
             IBlockData iblockdata1 = world.getType(blockposition.down());
-            IBlockData iblockdata2 = this.a.getCarried();
+            IBlockData iblockdata2 = Block.getValidBlockForPosition(getEnderman().getCarried(), getEnderman().world, blockposition); // Paper - Fix MC-124320
 
             if (iblockdata2 != null && this.a(world, blockposition, iblockdata2, iblockdata, iblockdata1)) {
                 // CraftBukkit start - Place event
-- 
2.21.0