Overview of the Issue
In Google Analytics for WordPress by MonsterInsights, the Popular Posts lists on a translated page show posts in other languages. For example, visitors of a Spanish page see links to English posts.
Workaround
Until MonsterInsights fixes it, add the code below to your theme’s functions.php file, or with a code snippets plugin. Popular Posts then lists the posts of the current language.
add_filter( 'monsterinsights_popular_posts_query_args', function ( $args ) {
$args['suppress_filters'] = false;
$args['lang'] = apply_filters( 'wpml_current_language', null );
return $args;
} );