This happened on my previous pontiac Vibe. leading hood seal swelled up and was distorted after the first Krown application. The hood seal at the cowl also swelled and would regularly slip out of the retainers.
Related note, I used rust proofing for the first time on that car with the thought that it would help resale value down the road if I sold it or provide rust free life of the car if I kept it. Ended up selling it and did not get an extra dime for it even though the car was spotless. I don't live in an area with a lot of snow fall so likely not going to rust proof any future cars I own.