I also had this problem on Investment Sales Summary page. The scroll bar is very easy to miss - poor color contrast (eg same shading as the header area), and this is the first time I remember having to use such a scroll bar anywhere in Turbo Tax in about 30 years of doing (usually fairly complex) taxes with it. I was convinced there was some bug until I found this post and then found the scroll bar after a careful search. It needs to be a different color to make it more visible. Wasted hours trying to work around/figure this out.
