Dot matrix

I was doing an eyebrow on a '03 F150 a couple weeks ago and as I started cleaning with a razor blade as usual, in the small band of dots that goes all the way around the windshield right where it makes the curve of the top I noticed several places black dots actually started coming off as I was scraping ! It left a faint discoloration where the dots had been but I stopped immediately and used a scrubby the rest of the way instead to finish. I didn't wanna test any further.

I know I've done other eyebrows on F150's and hope this was a freak.

I never said a word and hope that the visor hides it and he doesn't notice. So far so good.

I kept forgetting to post this.