Apps from previous session opening at startup

Has anyone noticed that in Fall Creators Update, Windows often tries to open the apps you had open when you last shut down/restarted when you log in?

I keep getting tripped up by this because:

1. It doesn’t seem to launch all of the apps I had open – only some of them – and I’m not clear on what the pattern is.
2. There’s a delay before the restarted apps start up. If I had Outlook open previously, it often opens a second copy of Outlook after I’ve already started Outlook in the new session.

It’s not even clear that there’s a way to turn this off, other than “workarounds” which get you to do alternate, older methods of shutdown that do not trigger this behaviour.