So I take it this is not normal?

This is an area I'm touching up where I had a drip, and tried to sand it out and wound up sanding all the way through. I have something like 10 coats of Gloss White Rustoleum on the truck now.

The surrounding area is unwaxed and has been wet sanded then cleaned with mineral spirits. The paint behaves almost as if there was a static charge or something, which seems possible since I'm in an area with low humidity, and all the wet sanding may have built up some sort of static charge. But this is about the only theory I can come up with.