I don't use that setting much, but it looks more like it's based on consecutive hits.... According to the documentation that you linked to, it shows "evar value A" counting the first time, then ignored again until A is hit after B.
I suppose maybe if the user's last hit in their previous visit, and their first page in their next visit were both "A" then the non-repeating instance may be used in the non-repeating instance logic.....
May I ask what type of segment you are trying to achieve? Maybe we can offer different ways to build the segment to get to your desired result?