I just tried it out after reading this, it's pretty crazy. I am clearly logged in with my own credentials, but if I go to "Account Details", I see the details o

I just tried it out after reading this, it's pretty crazy. I am clearly logged in with my own credentials, but if I go to "Account Details", I see the details of another user, which sometimes changes. As indicated in article, if I click on "Purchase History" or the link below, I sometimes see other user's data as well.