Master of Many forms and Human Bonus feat

[Darg]

The quote shows without any doubt that non-exalted feats default to "Extraordinary Abilities" unless otherwise mentioned.

Even if I believed that to be the case, you are missing one thing: they aren't classified as a special attack or quality. Which makes sense as they have their own category.

yeah it's a 1st lvl ability. So what? Wild Shape turns you in a generic matured state of the target creature type. And how much lvl/HD has the most generic adult human (hint: commoner/npc 1)? Yeah 1st lvl. That is the generic form you are shaping into. So where is the problem?

You are taking the shape. Alternate Form does not tell you you get to pick your form's HD as you get to keep your own. If it doesn't tell you you can do it you can't do it. As such, your level remains a minimum of 12.

The question to solve is still "how it is resolved when a human wild shapes (as MOMF 7) into another human".
Does he lose his original HBF or does he get to pick second HBF for the duration of Wild Shape?

You would have already possessed the trait. Becoming yourself doesn't give you something extra. Not to mention "bonuses from the same source don't stack," aka human racial trait.