When I add multiple items to a cart, they get stuck in the quick cart. They even pass from computer to computer some how and I am unable to remove them. This is one of the pages affected https://woodstove-fireplaceglass.com/shop/products.html To recreate the issue, add an item to the cart from the catalog page. The result is 4 items are now in the quick cart but only one item will be shown on the shopping cart page. This issue appears on Chrome and Edge but not Firefox. Magento 2.3.5-p1

update: the add to cart behavior sometimes works, but an additional issue is that the quantity update in the quick cart will add a different item if the amount is updated.

  • 1
    i can't replicate your problem but i am facing issue in minicart while updating product quantity
    – Asad Ullah
    Sep 21, 2020 at 14:13
  • I just disabled a plugin Yireo_Webp2 and that seemed to fix the add to cart issue, but yes, now the mini cart is adding a different item once the product quantity is increased
    – Josiah
    Sep 21, 2020 at 14:17
  • well then the issue is because of third part modules i think so that needs to be debug
    – Asad Ullah
    Sep 21, 2020 at 14:25
  • for minicart check minicart file it works with KO check its overridden files you will find some lead there
    – Asad Ullah
    Sep 21, 2020 at 14:26
  • I've disabled several modules and updated others. The issue still persists. Somehow when a customer adds a product to their cart, another customer will have the same item added to their cart.
    – Josiah
    Sep 21, 2020 at 14:52

1 Answer 1


I think the issue is with js when you load the website for the first time and scroll down you get this issue.

because of this js issue, your cart is not working properly.

ajaxinfinitescroll.js:90 Uncaught TypeError: $.mage.formKey is not a function
    at c.<anonymous> (ajaxinfinitescroll.js:90)
    at c.proxy (jquery.js:535)
    at IASCallbacks.fire (jquery-ias.min.js:17)
    at IASCallbacks.fireWith (jquery-ias.min.js:41)
    at c.fire (jquery-ias.min.js:115)
    at HTMLLIElement.<anonymous> (jquery-ias.min.js:95)
    at HTMLLIElement.opt.complete (jquery.js:7906)
    at fire (jquery.js:3238)
    at Object.fireWith [as resolveWith] (jquery.js:3368)
    at tick (jquery.js:7761)

Issue occur because of this $.mage.formKey();

I will recommend that put that trigger or what ever make ajax call on scroll in $(document).ready(function () {});

And Last are you sure $.mage.formKey(); exits in js

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