Up & down works to scroll, but when you’re at the start of a workout & in the Device connection tab - the scroll keys will change your power bias at the same time. It’s not a bug & is part of the program, but I find that really annoying that the scroll is doing 2 things in 2 separate fields. I submitted a “complaint” about the lack of scroll bars because I think they’re more useful when available as opposed to omitting them to make the interface look “clean”.
There’s some other discussion about it over here: https://wahoox.forum.wahoofitness.com/t/devices-tab/14008