There are usually two states for the text on PDF doc readers. One, where you don't have the lines wrap, and a second where the width of the PDF is constrained, and the text lines wrap. For some PDF viewers, they will show the original layout when opened, but if you zoom in, the text will reflow within the viewport of your screen, wrapping the text so you don't have to pan/drag to read a line.

Your answers to my scenarios are much appreciated. I think Jolla will be better able to define the success of broken/fixed, upcoming, and new features based on those scenarios. As I think through a few more, I'll add.