"This is not a bug"
I think I've heard that one before. Allow me to translate:
"To clarify, this is not a bug. This user most likely set their Notes privacy settings to 'Only Me,' however, they include Notes on their Limited Profile. Therefore, the people on their Limited Profile list can see their notes."
... or to translate:
"This is not a bug, it's just stupid, misleading labelling of the privacy setting options"
Since when did "Only Me" mean "Only me, my family, my friends, and my friends friends who I met a party once... and that girl I met in a pub who seemed pretty hot, but turned out to be a complete wierdo, and will probably torch my house if I remove her from my friends list"