Actually yes, it does. Differently than when dry, but it's never been a problem. I've run it in torrential rain, with snow piled on it, all kinds of things. You've mentioned him before. And I'll repeat - one anecdote != evidence. If it blows around too much in the wind then 1) it's probably too slack, and 2) put a twist in the line every few feet, and take a small rope or heavy cord and run between the two points where it sways, threaded through the spacers (or window openings) and secure that at each end. Problems solved. HAVE YOU EVER TRIED IT? Look, I don't care if you do or not. Means nothing to me either way. But you are being dismissive and derisive about something you seem both uninformed and inexperienced with.