Paper/paper-server/nms-patches/net/minecraft/world/inventory/ContainerChest.patch

--- a/net/minecraft/world/inventory/ContainerChest.java
+++ b/net/minecraft/world/inventory/ContainerChest.java
@@ -6,11 +6,40 @@
 import net.minecraft.world.entity.player.PlayerInventory;
 import net.minecraft.world.item.ItemStack;
 
+// CraftBukkit start
+import net.minecraft.world.InventoryLargeChest;
+import org.bukkit.craftbukkit.inventory.CraftInventory;
+import org.bukkit.craftbukkit.inventory.CraftInventoryView;
+// CraftBukkit end
+
 public class ContainerChest extends Container {
 
     private static final int SLOTS_PER_ROW = 9;
     private final IInventory container;
     private final int containerRows;
+    // CraftBukkit start
+    private CraftInventoryView bukkitEntity = null;
+    private PlayerInventory player;
+
+    @Override
+    public CraftInventoryView getBukkitView() {
+        if (bukkitEntity != null) {
+            return bukkitEntity;
+        }
+
+        CraftInventory inventory;
+        if (this.container instanceof PlayerInventory) {
+            inventory = new org.bukkit.craftbukkit.inventory.CraftInventoryPlayer((PlayerInventory) this.container);
+        } else if (this.container instanceof InventoryLargeChest) {
+            inventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((InventoryLargeChest) this.container);
+        } else {
+            inventory = new CraftInventory(this.container);
+        }
+
+        bukkitEntity = new CraftInventoryView(this.player.player.getBukkitEntity(), inventory, this);
+        return bukkitEntity;
+    }
+    // CraftBukkit end
 
     private ContainerChest(Containers<?> containers, int i, PlayerInventory playerinventory, int j) {
         this(containers, i, playerinventory, new InventorySubcontainer(9 * j), j);
@@ -56,6 +85,10 @@
         iinventory.startOpen(playerinventory.player);
         int k = (this.containerRows - 4) * 18;
 
+        // CraftBukkit start - Save player
+        this.player = playerinventory;
+        // CraftBukkit end
+
         int l;
         int i1;
 
@@ -79,6 +112,7 @@
 
     @Override
     public boolean stillValid(EntityHuman entityhuman) {
+        if (!this.checkReachable) return true; // CraftBukkit
         return this.container.stillValid(entityhuman);
     }