Background Gallery

Hi, I am making a page with a gallery. Unfortunately some photo’s are in portrait mode. I am trying to make the background transparent. It works in Sparkle but going to the preview it is just plane white.
Is this a bug?


I wanted the same thing, same problem. Fortunately, my page backgrounds are a plain swatch colour, so I made the letterbox colour the same as the page background. It’s a serviceable workaround.