Yes, that was the problem. Originally, that Haku model had a "backup body" that was hidden by the opaque set to 0. Once it was removed, you can see those blackouts are gone.
The second pic on the right shows the bra is causes the skirt to become completely transparent where the bra is. So, my thinking is some of these issues could probably be fixed by playing with the draw order? Like with the dress that's hidden in the right pic
>>2277911 that's cause the veil to become completely transparent around the body.