Not a bug, the butlers even say things when it happens.
I don't think it's weird, I think it's awesome. Also, it's a way to get a little bit of mood even when no other Glitches are around. Just stroll around the housing streets!
However, the butlers got very confused today announcing several times how happy they were that our Hi matched, when it so obviously didn't. Perhaps they were stunned by all the street activity.