I just had this happen to me with a Nike hoodie from the sale. The first one I got was sealed but when I opened it the hood had brown spots all over it. Returned and ordered a replacement, same thing. I even tried to get the the spots out and they didn’t budge.
I’m glad I am able to ask my fellow shoppers, because I think Nordstrom is making me crazy. If I open something that is sealed it should be perfect. But nope!