Hmmmmmmmmm. Maybe due to the glass roof transferring heat out, causing temp differentials and thus drafts but...
Have you perhaps looked
inside the car, through the frunk's hinge area? When I say inside, I don't actually mean the interior, but the space between the interior and the exterior panels of the car. Back when I had delivery, I noticed loose insulation down there and had to get the SC to attach it twice (loosened off twice, after the second time they used some stronger adhesive). I actually think a lot of people have this issue but just never bothered to look through that hinge area into the car.
Pic (I pulled the insulation up so I could take a better picture, but even when loose it's just slid down there and isn't visible unless you shine a light):
View attachment 763929
I remember an issue a while back in the thread about someone hearing rattles from the A-pillar, and turned out to be a loose speaker connection. I know it's not the exact same area but close-ish.