weird issue on my new razer basilisk

so ive just bought a razer basilisk and while it performs well normally, it has this weird issue where when i play CSGO, which obviously requires me to lift and reposition the mouse a lot, when i lift the mouse and put it back on the pad, the weapon switches automatically. I tried plugging my old g102 in and didnt find the same issue. ive attached a video here. i think its a defect but any help in this regard would be greatly appreciated .