My recollection of past behavior of OS X updates is the following:
- Update downloaded from within App Store. System reboots.
- System installation (gray background, apple symbol, est. time to completion)
- Login prompt screen
After updating to 10.11.3 today, however, there was no login step. After the gray installation screen, there was a brief black screen, and then my desktop was instantly restored. I was already logged in--as if I weren't logged out at all for the reboot, in fact--already reconnected to wifi (but severed from my VPN due to the reboot), and already connected to the App Store.
My basic question is, is this default behavior?
Addendum: am I taking crazy pills, or was this not the usual behavior before? Is it due to a setting I can change (so I can require the login screen after a reboot regardless of the reason)? I guess I find it unsettling that a user account is "auto-logged" into following a reboot, even if that user initiated the system update that triggered that reboot.