Indeed.
That's why I keep being nasty. I've a hard time understanding their course of action regarding their DNG spec and software release policy.
I simply wanted to report on a temporary good news : LR4.1-exported DNG files with Fast Load
and a Fullsize Preview embedded (this is not the default in a fresh LR installation, set on 'half-size' previews only)
may display correctly with FPVCodec 3.2.0.59.
(Axel, I've noticed your messages regarding this issue at several places, DPReview, Adobe... hope you did not take too much heat for that ; some guys there have at times a strange way of thinking

e.g. "stop whining about bugs" "it should work, so don't expect anything from us and shut up" "we shall do it as it pleases us, when it pleases us, if it pleases us, issue closed" or even "thanks for your bug report, we'll file it as a feature request or perhaps as idea suggestion", WTF?!)