No, that's not the case. When I check the archive code, after completing the path, "maid path max sub 50=2", this means a maximum value of 50 to unlock the status .But maybe your opinion is right, so I will try more to try to prove it.There is no bug. You simply are not meant to be able to max out her sub points if you choose the Gamer Path. Similarly you can't max out Kleio's sub stat unless you bought the sports car, or Alexis' sub stat unless you beat up your high school PE coach. I'm sure that there are several other situations where you can't max out the sub stat, but I can't remember any right now at the moment.