PaperMC/paper-server/nms-patches/net/minecraft/world/inventory/ContainerDispenser.patch

--- a/net/minecraft/world/inventory/ContainerDispenser.java
+++ b/net/minecraft/world/inventory/ContainerDispenser.java
@@ -6,9 +6,18 @@
 import net.minecraft.world.entity.player.PlayerInventory;
 import net.minecraft.world.item.ItemStack;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.inventory.CraftInventory;
+import org.bukkit.craftbukkit.inventory.CraftInventoryView;
+// CraftBukkit end
+
 public class ContainerDispenser extends Container {
 
     public final IInventory items;
+    // CraftBukkit start
+    private CraftInventoryView bukkitEntity = null;
+    private PlayerInventory player;
+    // CraftBukkit end
 
     public ContainerDispenser(int i, PlayerInventory playerinventory) {
         this(i, playerinventory, new InventorySubcontainer(9));
@@ -16,6 +25,10 @@
 
     public ContainerDispenser(int i, PlayerInventory playerinventory, IInventory iinventory) {
         super(Containers.GENERIC_3X3, i);
+        // CraftBukkit start - Save player
+        this.player = playerinventory;
+        // CraftBukkit end
+
         a(iinventory, 9);
         this.items = iinventory;
         iinventory.startOpen(playerinventory.player);
@@ -43,6 +56,7 @@
 
     @Override
     public boolean canUse(EntityHuman entityhuman) {
+        if (!this.checkReachable) return true; // CraftBukkit
         return this.items.a(entityhuman);
     }
 
@@ -84,4 +98,17 @@
         super.b(entityhuman);
         this.items.closeContainer(entityhuman);
     }
+
+    // CraftBukkit start
+    @Override
+    public CraftInventoryView getBukkitView() {
+        if (bukkitEntity != null) {
+            return bukkitEntity;
+        }
+
+        CraftInventory inventory = new CraftInventory(this.items);
+        bukkitEntity = new CraftInventoryView(this.player.player.getBukkitEntity(), inventory, this);
+        return bukkitEntity;
+    }
+    // CraftBukkit end
 }