I know technology has come a long way, but I do have a question about the type cover. I know in the past, I've seen issues in laptops where when they are closed, the KB and screens would somewhat touch. When they both touch, I noticed some kind of blemishes or stains on the screen from the keyboard. In cases like these, I would usually place a small sheet of foam to protect the screen. Has any Type Cover owner seen any issues like this?