Not acting on shortcode generated content

Hi, thank you you for giving existence to this plugin.

I would like to point out that the content generated through shortcodes, does not get affected.

For instance, this code returns the exact same text:

add_shortcode( 'shortcode_name', function () {
	$out = '<p>Combien vaut le kilo de pommes ? 25 €</p>';
	return $out;
} );

Any ideas on why is this happening ?

Thank you and good day.