In MSFS 2020, my mouse no longer controls my B747-8 virtual cockpit controls as precisely as a few weeks ago. Specifically, in the Overhead Panel, the five Anti Ice switches have lost functionality. All five are 3-position switches with On, Auto, Off. In the past, left-clicking the five switches would move them incrementally from Off to Auto and then to ON. Now, all I have are the ON and OFF positions, I’m no longer able to get the switches to stop in the Auto position. Another puzzling problem concerns the bottom center Wing Anti Ice switch. I am now unable to move it away from the Off position. When I click it, I see the switch move slightly to the right but it immediately snaps back to the OFF position.
The sim is set to ‘Legacy’ in the Accessibility section and my mouse is part of a wireless Microsoft 850 Mouse/Keyboard combo and has always worked perfectly until recently. I have no mouse problems whatsoever when flying the FBW Airbus or Headwind’s A330. Any help to solve this situation would be welcome indeed. Thank you.