I've got a 2020 Edge and noticed that sometimes when you press the set button on the cruise control, that it sets the cruise speed to 1km faster than the speed displayed on the speedo. For example the speedo shows 80, when you press the set button it shows 81 as the cruise control speed. If you then use the "-" to change the setting to 80, the car will cruise at 79 instead. The same happens in adaptive mode if you set the speed based on the speed signs. The display shows 60,70,80 or 100, but the cruise control will only achieve 59,69,79 or 99 when cruising. Interestingly enough if you manage to set the cruise control to the match the speed shown on the speedo then it will hold at the displayed speed.
I think it has something to do with the throttle, if my foot was resting on the throttle, and applying a minimum force it would set correctly, if I was in a cruising mode, or had no pressure on the pedal, it would set it 1km higher.
When I get a chance I'll put up a video of this.
Anyone seen this?