just a thought I am rebuilding an old Rapidweaver page I had. And I am dropping the images into the resources. What I realized is that when the images are different and the Layout Columns are not hight enough it ends up with a sizing issue. I use the square option.
Also would it be possible to show caption, author on the lighbox?
I think I figured it out. Since this was an old RapidWeaver project the images have a width / height of 640px. Thats how it was setup. For that reason it just takes the max width / height and squares it.