Structure Block NBT

So I'm having trouble applying NBT to structure blocks. I've registered the block and the tile with my own NBT and for some reason, whenever I place the block, I see the default 5x5x5 structure block diagram for a split second and then it disappears.

Thanks in advance.

Take a look:

Main File

PHP:

        Tile::registerTile(StructureTile::class, ["StructureBlock", "minecraft:structure_block"]);
        BlockFactory::registerBlock(new StructureBlock(), false);

Tile

PHP:

class StructureTile extends Spawnable {

    private $nbt;

    public function __construct(Level $level, CompoundTag $nbt)
    {
        parent::__construct($level, $nbt);
    }

    protected function readSaveData(CompoundTag $nbt) : void{

    }

    protected function writeSaveData(CompoundTag $nbt) : void{

    }

    protected function addAdditionalSpawnData(CompoundTag $nbt) : void{

    }

    protected static function createAdditionalNBT(CompoundTag $nbt, Vector3 $pos, ?int $face = null, ?Item $item = null, ?Player $player = null) : void{
        if($item !== null){
            $nbt->setByte('keepPacked', 1);
            $nbt->setString('name', 'test');
            $nbt->setString('author', '?');
            $nbt->setString('metadata', '');

            $nbt->setInt('posX', $pos->x);
            $nbt->setInt('posY', $pos->y);
            $nbt->setInt('posZ', $pos->z);
            $nbt->setInt('sizeX', 5);
            $nbt->setInt('sizeY', 5);
            $nbt->setInt('sizeZ', 5);

            $nbt->setString('rotation', 'NONE');
            $nbt->setString('mirror', 'NONE');
            $nbt->setString('mode', 'DATA');

            $nbt->setByte('ignoreEntities', 1);
        }
    }
}

Block

PHP:

class StructureBlock extends Solid {

    protected $id = Block::STRUCTURE_BLOCK;

    public function __construct() {
        parent::__construct($this->id, 0, 'Structure Block', 252);
    }

    public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, Player $player = null): bool {
        $this->getLevel()->setBlock($blockReplace, $this, true, true);
        $x = $blockReplace->getX();
        $y = $blockReplace->getY();
        $z = $blockReplace->getZ();
        $pos = new Position($x, $y, $z);
        $nbt = new CompoundTag("", [
            new StringTag(Tile::TAG_ID, "StructureBlock"),
            new IntTag(Tile::TAG_X, (int)$this->x),
            new IntTag(Tile::TAG_Y, (int)$this->y),
            new IntTag(Tile::TAG_Z, (int)$this->z),

            new ByteTag('keepPacked', 1),
            new StringTag('name', 'test'),
            new StringTag('author', '?'),
            new StringTag('metadata', ''),

            new IntTag('posX', $pos->x),
            new IntTag('posY', $pos->y),
            new IntTag('posZ', $pos->z),
            new IntTag('sizeX', 5),
            new IntTag('sizeY', 5),
            new IntTag('sizeZ', 5),

            new StringTag('rotation', 'NONE'),
            new StringTag('mirror', 'NONE'),
            new StringTag('mode', 'DATA'),
            new ByteTag('ignoreEntities', 1),
        ]);
        Tile::createTile("StructureBlock", $this->getLevel(), $nbt);
        return true;
    }
}

 

Never mind, just found https://github.com/TwistedAsylumMC/ChunkBorders.