Multiselect from->getState() empty values

class Document extends Model
{
    use HasFactory, HasTranslations;

    protected $table = 'document';

    protected $guarded = [];

    public array $translatable = [];

    protected $casts = [
        'holders' => 'array',
    ];

    protected static function booted(): void
    {
        static::addGlobalScope(new OrganizationScope);
    }

    public function organization(): BelongsTo
    {
        return $this->belongsTo(Organization::class)->where(['is_master' => 0]);
    }

    public function documentBase(): BelongsTo
    {
        return $this->belongsTo(DocumentBase::class)->where(['is_active' => 1]);
    }

    public function holder(): BelongsTo
    {
        return $this->belongsTo(Holder::class);
    }
}

class Document extends Model
{
    use HasFactory, HasTranslations;

    protected $table = 'document';

    protected $guarded = [];

    public array $translatable = [];

    protected $casts = [
        'holders' => 'array',
    ];

    protected static function booted(): void
    {
        static::addGlobalScope(new OrganizationScope);
    }

    public function organization(): BelongsTo
    {
        return $this->belongsTo(Organization::class)->where(['is_master' => 0]);
    }

    public function documentBase(): BelongsTo
    {
        return $this->belongsTo(DocumentBase::class)->where(['is_active' => 1]);
    }

    public function holder(): BelongsTo
    {
        return $this->belongsTo(Holder::class);
    }
}