Comment 2 for bug 1631723

Talking about the bug itself, I didn't found any crazy behaviour from Document Viewer while I was trying to reproduce this issue. It's reasonable for me that the cursor is moved at the top of the view since it's where my finger is.

Indeed, the scroll bar kept working properly, taking account of the position of my finger.

In any case, it would be worth to fix the other issue I mentioned above, and that would also fix any ambiguous behaviour, like the one you reported.

Thanks for taking some time for improving the Ubuntu platform! :)