The Photo Gallery plugin from 10Web uses a shortcode to add photo galleries to posts and pages. By default, Relevanssi doesn’t index the gallery contents. Photo Galler only registers the shortcode in the front end, so when Relevanssi indexes pages in the admin context, Relevanssi only sees the shortcode, not the gallery contents.
To fix this problem, add this snippet to your site:
add_filter( 'relevanssi_post_content', function( $content ) {
$bwg = BWG();
add_shortcode( 'Best_Wordpress_Gallery', array( $bwg, 'shortcode' ) );
return $content;
} );This snippet activates the Best_Wordpress_Gallery shortcode when Relevanssi indexes post content. Now Relevanssi can see the gallery contents.