Hello Svenup146!
Even though I use the mouse stationary on a mouse pad, I briefly tried it out for you on a desk pad and a glass table. It worked absolutely flawlessly on the textile mouse pad and the plastic desk pad. On the glass table it also worked, but occasionally showed stutters or jumps when moving. So in my experience, it works on glass in a pinch, but I wouldn't want to use it on glass (unlike the MX Anywhere 2S, for example).
I hope I was able to help you a little bit and send you my best regards.