add the option newly added to mx anywhere that lets you hold the forward button + scroll wheel to scroll horizontally. the thumbwheel on the mx3 NEVER works and its annoying af. for exsample in notepad++ it somtimes works one way and then stops working completly. in other programs it can work or not just hit and miss. had the same problem on the mx master (the first one). and i have a friend that has the s2 and he has the same problem. what is so difficult to get it working? never had any issue with a tumb wheel scroll on any other mouse that i have used.