I'm new to Generation and currently running Generation 7.7. The manual states that projects can have unlimited subs but the drop down menu only lists the first 18 subs and there is no scroll bar to access more further down as far as I can tell.
Yes you can have unlimited subs, but you can only see the 18!! Kidding of course.. Yes, I have logged that as a bug. Thanks for catching that, and being the first to make it to 18 subs!!