Hello, ever since I got the MX Master 3 I never get the switch Desktop Left and Right reliably working. A year ago it worked for an hour or so after restarting or even re-installing the Options app. But now since Options + it never works. I really need it at the thumb button gesture to work.
My Trackpad switches the desktops just fine and my Mac Preferences Keyboard shortcuts are reset to default.
Please help. Thanks so much and all best, Mark

MacOS Big Sur 11.4, M1 MacBook Pro