Hello,
My MX Master 3S is having issues on a windows 10 laptop with the button assignments where it is no longer reacting to input. I have Copy and Paste assigned to the side buttons on the left-hand portion of the mouse and if i go into the app, it shows they are correctly assigned, but do not work. I also have moments where the left click will stop functioning and i have to use CTRL+ALT+DELETE to open up the task manager and it resumes function. I have disconnected the mouse and reconnected it along with making sure it is updated (it is).