Message Success on Product Page times out too quickly when adding to cart.

[Draginto]

We encountered this problem yesterday on our site. We ruled it out to this extension being the culprit. What happens is, that when a user clicks a product and goes to its details page, if they click "add to cart", the "success" message that usually appears at the bottom (for us) of the page, flickers then disappears essentially not letting the customer know that the product was added.

We also would like to note, this "flicker" does not occur anywhere else except for when we add to cart from the product details page. We would also like to point out, that if we do not run the setup to hook up our facebook page and pixel. The messages appear as they should.

Here are our steps:

1. Install Facebook extension for Magento
2. Run the setup for facebook in the admin, connecting our facebook page and pixel.
3. See the frontend and try adding product to cart from product details page.

[KostasMel]

I Have the same problem too. when you press the "add to cart" button, it shows the success messages and it disappears almost immediately!

[visahardik]

I have the same problem not only success messages all messages quickly disappear.

[aterjung]

We have the same problem, all messages are removed right after they are displayed. As far as i could see. After disabling the module the messages are displayed as normal again. How to solve this issue? I have allready tried the latest version from main branch.

[haelbichalex]

I couldn't yet find out why, but if you use GET instead of POST in the ajax call for ProductInfoForAddToCart, this issue is gone.

https://github.com/facebookincubator/facebook-for-magento2/blob/0da8145b893f7fa7f43e4851bf75b6c304d97317/view/frontend/templates/pixel/add_to_cart.phtml#L37

---

This call is done here: view/frontend/templates/pixel/add_to_cart.phtml

<?php /** @var \Facebook\BusinessExtension\Block\Pixel\AddToCart $block */ ?>
<?php if ($block->getFacebookPixelID()) { ?>
    <script>
        require([
            'jquery'
        ], function ($) {

            function trackAddToCart(content_ids, content_name, content_category, value, eventId) {
                fbq('set', 'agent', '<?= $block->getFacebookAgentVersion() ?>', '<?= $block->getFacebookPixelID() ?>');
                fbq('track', 'AddToCart', {
                        source: "<?= $block->getSource() ?>",
                        pluginVersion: "<?= $block->getPluginVersion() ?>",
                        content_type: "<?= $block->getContentType() ?>",
                        currency: "<?= $block->getCurrency() ?>",
                        content_ids: content_ids,
                        content_name: content_name,
                        content_category: content_category,
                        value: value
                    },
                    {
                        eventID: eventId
                    }
                );
            }

            var product_info_url = '<?= $block->getProductInfoUrl() ?>';

            $(document).on('ajax:addToCart', function (event, data) {
                var product_sku = data.sku;
                var form_key = jQuery("[name='form_key']").val();
                $.ajax({
                    url: product_info_url,
                    data: {
                        product_sku: product_sku,
                        form_key: form_key
                    },
-                  type: 'post',
+                  type: 'get',
                    dataType: 'json',
                    success: function (res) {
                        trackAddToCart(
                            [res.id],
                            res.name,
                            res.content_category,
                            res.value,
                            res.event_id
                        );
                    }
                });
            });
        });
    </script>
    <?php $block->logEvent($block->getFacebookPixelID(), 'AddToCart') ?>
<?php } ?>