Re: Not to be mean but,
I don't really think it's "minor".
It has a relatively cheap workaround, but it's a straightforward failure to comply with the standard that very simple early testing (or design review) should have found long before shipping - it's not like E-marked cables are rare or hard to find, and powering a Pi from a PC is a reasonably common use case.
The idea that it (and the thermals!) weren't noticed is what's worrying. Shipping with an errata note would have been just fine.