Are there any widely used hardware specs that a "big and stable" corp hasn't gotten wrong in some implementation? Back when Ethernet was a lot simpler than it i

Are there any widely used hardware specs that a "big and stable" corp hasn't gotten wrong in some implementation? Back when Ethernet was a lot simpler than it is now there were plenty of big players who couldn't even manage to provide unique MAC addresses. Is IEEE754 being too complex to blame for Intel's FDIV bug?