[1.15.2][Solved] DeferredRegistry can't stack BlockItems

@Mod.EventBusSubscriber(modid = MyMod.MOD_ID, bus = Mod.EventBusSubscriber.Bus.MOD)
public class BlockInit
{
    public static final DeferredRegister<Block> BLOCKS = new DeferredRegister<>(ForgeRegistries.BLOCKS, MyMod.MOD_ID);

    private static final Block.Properties BASE = Block.Properties.create(Material.ROCK).hardnessAndResistance(1.5F).harvestLevel(2).harvestTool(ToolType.PICKAXE);

    public static final RegistryObject<Block> HEX_RED = BLOCKS.register("hex_red", () -> new HexBlock(BASE));
    public static final RegistryObject<Block> HEX_GREEN = BLOCKS.register("hex_green", () -> new HexBlock(BASE));
    public static final RegistryObject<Block> HEX_BLUE = BLOCKS.register("hex_blue", () -> new HexBlock(BASE));
    public static final RegistryObject<Block> HEX_CYAN = BLOCKS.register("hex_cyan", () -> new HexBlock(BASE));
    public static final RegistryObject<Block> HEX_MAGENTA = BLOCKS.register("hex_magenta", () -> new HexBlock(BASE));
    public static final RegistryObject<Block> HEX_YELLOW = BLOCKS.register("hex_yellow", () -> new HexBlock(BASE));
    public static final RegistryObject<Block> HEX_ORANGE = BLOCKS.register("hex_orange", () -> new HexBlock(BASE));

    @SubscribeEvent
    public static void registerItems(final RegistryEvent.Register<Item> event)
    {
        final IForgeRegistry<Item> registry = event.getRegistry();

        BlockInit.BLOCKS.getEntries().stream().map(RegistryObject::get).forEach(block ->
        {
            registry.register(new BlockItem(block, ItemInit.BASE_PROP).setRegistryName(block.getRegistryName()));
        });
    }
}

@Mod(MOD_ID)
public class MyMod
{
    public static final String MOD_ID = "mymod";

    public MyMod()
    {
        final IEventBus eventBus = FMLJavaModLoadingContext.get().getModEventBus();

        eventBus.addListener(this::setup);
        eventBus.addListener(this::clientSetup);

		ItemInit.ITEMS.register(eventBus);
        BlockInit.BLOCKS.register(eventBus);

        MinecraftForge.EVENT_BUS.register(this);
    }

    private void setup(final FMLCommonSetupEvent event)
    {}

    private void clientSetup(final FMLClientSetupEvent event)
    {}