I programmed the buttons under the thumb wheel on the MX 3 to function as "redo" and "undo", however, they are no longer functioning in that manner. It worked just fine out of beta, and for maybe the first week or so in the beta. I can't seem to get them to work properly now. Those functions show up in the app as I've programmed but the mouse executes a different function (horizontal scroll in the left and right direction).

Tried rebooting, re-starting, re-pairing all to no avail. Please advise.