You shouldn't. Although I'm in software now, I've done enough hardware design to know that sometimes shit just happens no matter how well you jump through all the hoops.
It's a pity that it happened so soon after the product was released, but things like this are not at all unusual. In fact, they're lucky that they found out about it right away. I've known of suppliers changing the component they sell you without informing anyone or changing the part number, causing problems that go undetected for years.
