Do they look a bit milky blobs on/under the lacquer? If so I have seen this before on a smart repair which involved lacquer spray over the affected panel and the paint hasn't completely gone off before it rained, adding a bit of opacity to the lacquer. It did polush out after leaving the paint to harden.
Does sound like your car has been repaurdd vefore yoh picked it up.
I only found out after 3 years of ownership that my "brand new" R had a smart repaired Pretoria from new when the wife grazed it and it went for a refurb with unusually tjick paint and a cross section of the scrape showing 2 full sets of paint coats (primer, colour, lacquer, primer, colour, lacquer).