Problem with quantity calculation

Hello everyone,

I'm setting up a shop for a customer. I noticed that the quantity calculation on the product page isn't working correctly.

When I'm on the product page and I enter 2 as the quantity, only 1 item is put in the shopping cart.

I haven't found a setting where I can correct this and I suspect that it might be a mistake?

 

I have noticed that this problem only occurs when I am directly in the product details.

If the product is added to the shopping cart via the category, the corresponding quantity is also adopted.

In addition to the e-shop, the website also operates EventBooking.

However, I am surprised that everything works on another test website with the same components.

No Help?