We seem to be having a weird issue after we switched back to our Magento 1.9 store with the cart having multiple items in the cart even after the cart and cached has been cleared.
To give a bit of back story, we built a new Magento 2 store on a different hosting box and switched all operations over to the new store only to find out that it wouldn't work after all. We then switched back to our Magento 1.9 store until we can work out the bugs with Mag 2. Ever since we switched back to our Magento 1 store there seems to be an issue where items are remaining hidden in the cart even after the items have been removed and the sales_flat_quote and sales_flat_quote_item DB tables have been emptied.
I have attached a couple of screenshots showing a single $19 item in the cart but the subtotal is showing $38. It doesn't seem to be doubling the price but pulling an old item that may have previously been added to the cart.
I tried installing an extension that removed items from the cart when if the customer has added them before logging in but that didn't seem to help.
Any ideas what may be causing this?