One WP Plugin shortcode attribute changes properly, the other one sticks to the first-passed value across whole site

This is a WordPress with PHP/React Plugin.

There are two attributes that are supposed to be given to the plugin via the shortcode: lang and formType. There are multiple instances of the plugin across the site: page 1, page 2, etc.

Say I load page 1, which has the plugin with attributes lang=lang1 and formType=type1. So far, everything works as expected.

I then load page 2, which has the plugin with attributes lang=lang2and formType=type2. On this page, it loads the plugin with the correct language, but it uses formType=type1. This is reflected in the HTML element that the PHP loads the attributes into for the React app to read from.

I tried on a different WordPress site that uses Autoptimize and Breeze for caching. I clear those caches and try to load page 2 again, and it still uses formType=type1.

If page 2 is loaded first, then page 1 will use formType=type2.

In case it helps, this is what the code of the shortcode looks like:

add_shortcode('plugin_name', function ($atts) {
    $args = shortcode_atts([
        'lang' => 'lang1',
        'formType' => 'type2'
    ], $atts);
    return plugin_name_shortcode($args['lang'], $args['formType']);
});

And this is the code for the plugin_name_shortcode(...):

function plugin_name_shortcode($lang = 'lang1', $formType = 'type2')
{
    $config = load_config();
    $country = detect_country();
    $config['country'] = $country;

    wp_enqueue_style('plugin-name-style');
    wp_enqueue_script('plugin-name-script');
    wp_localize_script(
        'plugin-name-script',
        'businessConfig',
        $config
    );

    return make_plugin_html($lang, $formType);
}

What I’ve tried

• Tinkering with .htaccess (the server uses Apache) to not allow caching for .js files and confirmed that the resulting .js file downloaded has “max-age=0”.
• Renaming the formType attribute