Created attachment 6936 Example image Since 4.12.3, rotated wallpapers are properly rotated before display. That's great ! But they are sometimes (not always) improperly truncated and I'm only getting some part of the image. I'm attaching an downsized example (the proper image, and what I get on the desktop). Desktop wallpaper configuration is "Scaled, take a random image from a directory"
Created attachment 6937 Image as displayed by the desktop
I couldn't reproduce this bug with the attached image, but I could with the one from Bug #14360, so I'm closing this bug in favor of that one. Thanks for reporting! *** This bug has been marked as a duplicate of bug 14360 ***