This also applies to alt tabbing, because there's so many instances where your team is trying to invade and you're just not there to participate. It's really frustrating, especially when it comes to the other way around.
Edit: Another instance of this is my last game. My Kayn was afk until 2:50 and asked for a leash, of course my bot lane being as nice as they were, they leashed for him. It was at that time where I noticed that Kayn ran to his krugs instead because he was texting on his phone, but my bot lane still leashed for him.
They ended up missing their entire first wave of CS and were fucked the entire rest of the game.