That unusual behaviour I wrote about with the Web Share API in Safari on iOS is now officially a bug—thanks, Tess!
Tuesday, October 22nd, 2019
Tuesday, March 28th, 2006
Bug 330884 - When different users on one system choose to save or not save passwords for sites, any other user can see sites they not only saved passwords for but can also see what other users have been saving/never saving passwords for.
The guy who submitted this Mozilla bug writes "This privacy flaw has caused my fiancé and I to break-up after having dated for 5 years."