It's usually possible to "grab" the small, small area between entry boxes and flick up or down from there. Precision work that is, though, and it can be distractingly fiddly.
It's pretty important to me that the mobile experience be smooth and easy - I don't want players to have to whip out a microscope to find the spots to scroll. I think the issue is the current touch checks if you're hitting a header but is ignored if it's a card instead. Next patch will have a fix.
