I beg your pardon everyone. I have not done any kind of reporting. But I'll see if I can bring this thread to the attention of EN support.
Since touch screen scrolling works just fine for others, and myself now that I've tried, perhaps it isn't as much a bug as it is a feature. A pure guess is that the scrolling is adapted for touch screen usage, which restrain touch pads to be working optimally at the same time. The same would be true the other way around. It would be very weird though, since both forms works in other apps, programs etc.