afterStateUpdated $old does not work after using Builder/Block

public static function form(Form $form): Form
{
    return $form
        ->schema([
            Forms\Components\TextInput::make('test'),
            Forms\Components\TextInput::make('title')
                ->required()
                ->maxLength(255)
                ->live(onBlur: true)
                ->afterStateUpdated(function (Forms\Get $get, Forms\Set $set, ?string $old, ?string $state) {
                    if (($get('slug') ?? '') !== Str::slug($old)) {
                        return;
                    }
                
                    $set('slug', Str::slug($state));
                }),
            Forms\Components\TextInput::make('slug')
                ->required()
                ->maxLength(255),

            Forms\Components\Builder::make('data')
                ->blocks([
                    Builder\Block::make('heading')
                        ->schema([
                            Components\TextInput::make('content')
                                ->label('Heading')
                                ->required(),
                            Components\Select::make('level')
                                ->options([
                                    'h1' => 'Heading 1',
                                    'h2' => 'Heading 2',
                                    'h3' => 'Heading 3',
                                    'h4' => 'Heading 4',
                                    'h5' => 'Heading 5',
                                    'h6' => 'Heading 6',
                                ])
                                ->required()
                        ])
                        ->columns(2);
                ])
        ]);
}