Adding Wordpress Shortcode

Hi there!

I am trying to create a shortcode to display the content of some custom post. I am trying the basic wordpress example, however, nothing displays on the frontpage after using this code and adding to the editor '[foovar]'

function foobar_func( $atts ){
	return "foo and bar";
}
add_shortcode( 'foobar', 'foobar_func' );

The page has selected the predetermine template.

If i add the shortcode in a page created with elementor,it works and it prints "foo an bar".

Does GP handle shortcodes differently?

Thanks.