Facebook Automatically Sending Friend Request

Surprised that this is not on the HN front page (yet), everyone around me seem to be talking about this debacle. Many are incredibly embarrassed by this, as their stalking habits (which they assumed are private) were exposed, to no other than the target itself.

You can see all your sent requests in the FB activity log (under “connections”). This includes requests that were already rejected/accepted.

How does something like this slip through the e2e tests? Do they not monitor outgoing requests from the UI?