Tiny scratches on glass mousepads are nothing to worry about.

No, they won’t cause tracking issues.

The sensor in a modern mouse reads the surface at a microscopic scale — it needs consistent texture or pattern to track movement. Tiny surface scratches from normal mouse feet are too shallow and too random to disrupt that. Glass is hard, so those scratches are basically just light scuffs. They don’t change the surface enough for the sensor to notice.

What can cause problems is deep gouges (like from dropping something heavy) or wear on a coated glass pad where the coating starts peeling. That’s a different story — uneven coating can confuse the sensor. But normal use scratches? Ignore them.

If you ever get a scratch you can feel with your fingernail, that might cause a skip — but that’s not from normal use.