I would rather defer to higher authorities But what I think is:
In the first case, no Red objects are involved in picking, so that ALL red objects are picked, and so when blue goes outside layout, ALL red objects are destroyed (all 1 of them).
In the second case, it's as I said above. 0 Red objects are picked because 0 Red objects are outside the layout, so 0 Red objects are destroyed.
Just my understanding and I'm happy to stand corrected.
Edit: I'd be interested if you could say, in words, what you expect to happen in each case, and why. Also out of interest, add a few more Red objects on the layout.