craftbukkit/nms-patches/net/minecraft/world/inventory/ContainerAnvilAbstract.patch

--- a/net/minecraft/world/inventory/ContainerAnvilAbstract.java
+++ b/net/minecraft/world/inventory/ContainerAnvilAbstract.java
@@ -50,7 +50,7 @@
         while (iterator.hasNext()) {
             final ItemCombinerMenuSlotDefinition.b itemcombinermenuslotdefinition_b = (ItemCombinerMenuSlotDefinition.b) iterator.next();
 
-            this.addSlot(new Slot(this, this.inputSlots, itemcombinermenuslotdefinition_b.slotIndex(), itemcombinermenuslotdefinition_b.x(), itemcombinermenuslotdefinition_b.y()) {
+            this.addSlot(new Slot(this.inputSlots, itemcombinermenuslotdefinition_b.slotIndex(), itemcombinermenuslotdefinition_b.x(), itemcombinermenuslotdefinition_b.y()) { // CraftBukkit - decompile error
                 @Override
                 public boolean mayPlace(ItemStack itemstack) {
                     return itemcombinermenuslotdefinition_b.mayPlace().test(itemstack);
@@ -110,6 +110,7 @@
 
     @Override
     public boolean stillValid(EntityHuman entityhuman) {
+        if (!this.checkReachable) return true; // CraftBukkit
         return (Boolean) this.access.evaluate((world, blockposition) -> {
             return !this.isValidBlock(world.getBlockState(blockposition)) ? false : entityhuman.canInteractWithBlock(blockposition, 4.0D);
         }, true);