I just noticed this "improvement" in 10.12.2: If you go to Safari > Preferences > Passwords, you must enter your administrative password to unlock them. In the past, you could get to that Passwords pref pane but you had to select individual passwords and unlock them one at a time. Now, all are unlocked. Merely click on the one you want and it changes from dots to the actual password. When you switch to another pref pane and switch back, you have to unlock them again. It's actually somewhat more convenient than the old method.
OS 10.14.3, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365