I have the former MX Master 2S and upgraded to the 3. All seems fine except the scrolling with the scroll wheel. After about 3 turns of the wheel the web pages don't scroll consistently (tried multiple browsers) as if the wheel turning is not being detected internally properly. I tried the same with the 2S again and no scroll issues so something is definitely wrong with this mouse. Put in for a defective item replacement and hope it's just this one mouse. Will update this review if the replacement fixes the problem.
Edit: I forgot to mention that I bought this updated MX Master 3 hoping the macOS bluetooth jittery cursor issues would be fixed as there are known bluetooth problems with macOS with the MX Master 2S. Sadly they were not fixed and it's still jittery on a Mac.