Users can't see private notes created by themselves if "Mark notes as private" is set but "View private notes" is not
If you configure the role permission as follows:
[x] Mark notes as private
[ ] View private notes
the users in this role can create private notes, but after creation they can't see them any more (see attachment).
Ok, I must admit that this is not really a bug because it exactly matches the configured settings, but in my opinion users should always be allowed to see their own (private) notes, regardless of the "View private notes" permission.