Strange mark on car after washing for professional car care

I wonder if anyone here can identify what this mark on the paint is?

For your information, the car has a ceramic coating, specifically STEK Formula Quartz. This mark became visible after the car was winter washed by a professional car care professional. The products used were pH neutral.

However, I asked him to install some carbon covers on the mirrors and side camera on a 2024 Tesla Model 3 Performance (Quicksilver). Alcohol was used before installation. Could it be that this mark on the paint/coating is a chemical reaction from the alcohol?

Last but not least – how do I fix this?

Thank you in advance!