Moar, fix API

patches/server/0219-Refresh-player-inventory-when-cancelling-PlayerInter.patch

@@ -0,0 +1,29 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Minecrell <minecrell@minecrell.net>
+Date: Fri, 13 Jul 2018 14:54:43 +0200
+Subject: [PATCH] Refresh player inventory when cancelling
+ PlayerInteractEntityEvent
+
+When interacting with entities with an item, the client will assume
+the interaction is successful, and update the held item on the
+client. However, if the interaction is cancelled on the server side,
+the client will still mistakenly remove/replace the item in hand.
+
+Examples for this are milking cows with a bucket or dyeing sheep.
+The bucket is replaced with milk and the dye removed from inventory.
+
+Refresh the player inventory when PlayerInteractEntityEvent is
+cancelled to avoid this problem.
+
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index a646264c34592f3a7512e94399ba15490381095d..867478671d3223338bf01a36da0361a5ae1f38be 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -2539,6 +2539,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+                             }
+ 
+                             if (event.isCancelled()) {
++                            ServerGamePacketListenerImpl.this.player.containerMenu.sendAllDataToRemote(); // Paper - Refresh player inventory
+                                 return;
+                             }
+                             // CraftBukkit end