Greetings,
I currently have two games running and I've had this happen with both games.
My villagers change names on their own. It's not a huge problem, but it can get confusing if I'm trying to keep track of certain villagers and such. I just realized recently that it seems to be villagers who are next to each other in the Details screen who end up named the same.
I haven't seen this mentioned (apologies if I've missed it), has anyone else run across this? I also had this happen with less frequency in VV1.