No, it does reset the feed to the beginning. And yes, it shouldn't do that the first time you hit the home button if switching from something other in the bottom menu (search, messages, whatever). The second time you tap it (or if already in home), yes, it should scroll you back to top.
Or at least that would be my logic, how I would set it up.
I'm trying out Voyager today (finally, after setting up my voyager container a week ago), and it doesn't do this! I have been very happy with Voyager over all.