Strange output

[bajki]

Hi, im have issue with shortcodes..

Shortcode:
public function register($shortcode, $content, $compiler, $name, $viewData)
{
return sprintf('

%s

', $shortcode->class, $content);
}

Compile: {{ \Shortcode::compile('[div class="row"][div class="col-12"]Bold text[/div][/div]') }}

Output:

Bold text

[/div]

Whats wrong here?

Thanks,
Ivan