No, as far as I know there is no indication that this phenomenon is more often observed in P. harveyi than in other species. You could ask Martin Fischer or Bernd Bussler who both are good breeders of this species and did raise several bigger broods each.
The most cases of a single sex in a brood that I know of were observed with nagyi. But in one case (me) it was (nearly) only females, in the other (Hallmann), only males, nearly. Günter Kopic info(at)guenter-kopic.de has a lot of experience in these things.