Is the page selected and the image highlighted with a yellow surround? Are you using the zoom slider at the top of the cell? What happens if you zoom to say 50%? can you then move the image in all directions?
Thanks but this does not work in the photo book module.
Hi, I have exactly the same problem.
Lightroom CC 2015-3, Windows 7-64 Ultimate.
Yes, we can reproduced the same at our end, when working in zoomed view 1:1 or 4:1 in the Book Module, we can only scroll vertically but not horizontally only in Windows platform.
Our engineering team working on it.