Option page doesn't return other site's field when using switch_to_blog

I'm making an alert setup for my site that scours the sub sites to know if they have also alerts to show on the whole network.

So here is what I do (abbreviated):

if ( function_exists( 'get_sites' ) && class_exists( 'WP_Site_Query' ) ) :
    $sites = get_sites();
    foreach ( $sites as $site ) :
        switch_to_blog($site->blog_id); 
        while (have_rows('repeater_alert', 'option')) : the_row();
           $title = get_sub_field('alert_title');
           $from = get_bloginfo('name');
        endwhile;
    endforeach;
endif;
restore_current_blog();

And well, on site #1 (Primary site of network) looking into site #2, everything works, but when on site #2, title will contain the alerts of site #2, but the from will be correct, giving out the name of site #1.

So for some reason, when switching to the primary site of the multisite network, WP gets it to load that site, but not ACF.

Start with the reported reproduction using switch_to_blog(), have_rows(), get_sub_field(), get_bloginfo(), and restore_current_blog() across two WordPress multisite sites. Compare the site context used by ACF option fields with the context used by get_bloginfo(); done means fields and the site name consistently come from the switched site.