Split: Titles/meta descriptions for product pages

Hello,

Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for any inconvenience this issue may have caused you.

I’ve separated your ticket so we can assist you accordingly.

To force the long description over the short description, you may need to create a custom variable for the product’s long description by adding this filter on your site:

add_action( 'rank_math/vars/register_extra_replacements', function() {
	rank_math_register_var_replacement(
		'woo_full_desc',
		[
			'name'        => esc_html__( 'Woo Full Desc.', 'rank-math' ),
			'description' => esc_html__( 'Woo Full Description...', 'rank-math' ),
			'variable'    => 'woo_full_desc',
			'example'     => woo_full_desc_callback(),
		],
		'woo_full_desc_callback'
	);
} );
function woo_full_desc_callback() {
	global $post;
	if ( empty( $post ) ) {
		return 'Product Description';
	}

	return wp_strip_all_tags( $post->post_content );
}

After this, you can use the %woo_full_desc% variable in the SEO description or single product description field.

Please note that the filter may not be visible while editing the products as it only works when your products load in a browser. You can check the published/saved product’s meta description via its source code.

You can also check the product’s meta description using this tool:
https://www.heymeta.com/

I hope that helps.

Thank you.