Program: 1112
Project: 1112
Buggy source:
public EntityRef newInstance(Vector3f spawnPosition,EntityRef controller){
  EntityRef player=entityManager.create("String_Node_Str",spawnPosition);
  EntityRef transferSlot=entityManager.create("String_Node_Str");
  CharacterComponent playerComponent=player.getComponent(CharacterComponent.class);
  playerComponent.spawnPosition.set(spawnPosition);
  playerComponent.movingItem=transferSlot;
  playerComponent.controller=controller;
  player.saveComponent(playerComponent);
  EntityRef chest=blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"));
  BlockItemComponent blockItem=chest.getComponent(BlockItemComponent.class);
  EntityRef chestContents=blockItem.placedEntity;
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(chestContents,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  EntityRef doorItem=entityManager.create("String_Node_Str");
  ItemComponent doorItemComp=doorItem.getComponent(ItemComponent.class);
  doorItemComp.stackCount=20;
  doorItem.saveComponent(doorItemComp);
  inventoryManager.giveItem(chestContents,doorItem);
  EntityRef innerChest=blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"));
  BlockItemComponent innerBlockItem=innerChest.getComponent(BlockItemComponent.class);
  EntityRef innerChestContents=innerBlockItem.placedEntity;
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,innerChest);
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,chest);
  return player;
}

Fixed version (ground truth):
public EntityRef newInstance(Vector3f spawnPosition,EntityRef controller){
  EntityBuilder builder=entityManager.newBuilder("String_Node_Str");
  builder.getComponent(LocationComponent.class).setWorldPosition(spawnPosition);
  builder.getComponent(NetworkComponent.class).owner=controller;
  EntityRef transferSlot=entityManager.create("String_Node_Str");
  CharacterComponent playerComponent=builder.getComponent(CharacterComponent.class);
  playerComponent.spawnPosition.set(spawnPosition);
  playerComponent.movingItem=transferSlot;
  playerComponent.controller=controller;
  EntityRef chest=blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"));
  BlockItemComponent blockItem=chest.getComponent(BlockItemComponent.class);
  EntityRef chestContents=blockItem.placedEntity;
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(chestContents,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  EntityRef doorItem=entityManager.create("String_Node_Str");
  ItemComponent doorItemComp=doorItem.getComponent(ItemComponent.class);
  doorItemComp.stackCount=20;
  doorItem.saveComponent(doorItemComp);
  inventoryManager.giveItem(chestContents,doorItem);
  EntityRef innerChest=blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"));
  BlockItemComponent innerBlockItem=innerChest.getComponent(BlockItemComponent.class);
  EntityRef innerChestContents=innerBlockItem.placedEntity;
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(innerChestContents,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(chestContents,innerChest);
  EntityRef player=builder.build();
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,blockFactory.newInstance(blockManager.getBlockFamily("String_Node_Str"),99));
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,entityManager.create("String_Node_Str"));
  inventoryManager.giveItem(player,chest);
  return player;
}