Close All button isn't closing apps for real

Just realized the Close All button, on recent apps, isn't closing them for real. I've been thinking that was occuring but now I'm sure. There's some bug somehow.

Let me explain: I know closing apps isn't worth since android always load bunch of stuff in RAM, but once or twice a day I use it. It's kinda a reload for some apps, that you've navigated through many pages etc. Well, last night I did that and went to sleep. Now I've opened Reddit and it was exactly were I last used it, yesterday.

How? I've used the close all apps at least 1 time after that.

It happened with reddit this time, but I'm pretty sure it has happened with Shopee too.

Doesn't bother me at all, just sharing for fun.