Wind getting under the panels and lifting your roof off ? LOL
During a monsoon storm a couple of summers ago one of our neighbor's panels flew off and landed within a foot of our pool.
Other than that, no issues. We have a tile roof covered with panels and no leaks, even with monsoons every summer.
My neighbor had an issue with pigeons getting under their panels. A LOT of pigeons with all the crap (see what I did there) that goes along with it. And it can be pretty corosive over time. I think they put up screens to block them.