I can't change the default wallpaper. When I right-click the desktop and open "Change Wallpaper" (actually I'm using it in spanish, so it says "Cambiar el fondo de escritorio") I can select other images, but I don't see any change in the actual desktop, even if I close that window or restart it...
I am using nexus 5 and I am having trouble setting a non scrolling wallpaper. I swear I set a non scrolling wallpaper the first time around. When i selected an image it simply flashed a vertical and a horizontal crop box on my image and i could select whichever one i wanted.
Last night i decided to change my wallpaper (huge mistake) and it never showed me those options again.