Customer see "Out of Stock" on order confirmation after paying

[Mortskaa]

I have received feedback from two customers that has purchased the last variant available from two different products. Everything is fine in cart and at checkout, but when the purchase has been done, the status of the product changes to "Out of Stock" in the order confirmation directly after. This causes the customer to think they have paid for an out-of-stock item when their purchase is in fact causing the product to be out of stock. Is there anyway to change this?