This software usually remains dormant or is lightly used until such point as the warranty period expires and full usage begins whereby all the defects and failings become apparent.
<30 days later>
TL. "It's in production now and people are unhappy as it doesn't work."
PM. "It's not my problem as the warranty period has expired."
TL. "We can't even begin to fix it as there is no Dev or Test environments which contain this software, nor is there any documentation!"
PM. <see previous PM response>