In logitech options you used to be able to set the forward/backward buttons to be modifier keys alone (shift, ctrl, alt, etc..) and now its required to make them an "advanced click". I had used the modifier setting in my workflow to the point where I now rely on it, but my replacement mouse wont operate on Options, and requires options+. Please PLEASE put back the modifier functionality. In revit, revizto, and a variety of other 3D apps its crucial to use these modifier keys all the time, if I need to use the keyboard it make it two handed, but if I can use these keys via the mouse it increases my workflow so much. I'm begging, give the functionality back.