FILE-- A screen at Facebook’s developer conference in San Jose, Calif, May 1, 2018. As many as 14 million Facebook users who thought they were creating private posts that only a small group of friends could see were, in fact, making public posts that anyone could view, the company said. Facebook said the bug affected users from May 18-22, 2018, while the company was testing a new feature. (Jason Henry/The New York Times)