When I use the default wallpapers which came with my Moto X (XT1052 Stock; No Root) the navigation bar is transparent as shown in the left side of the below image.
But when I try to use any other custom wallpaper then the navigation bar shows black as shown in the right side of the below image. ( I have also tried putting other custom wallpapers but the same problem is occurring)
Also one thing to notice is that the status bar on the top stays transparent with both the default and custom wallpaper.
Does anybody else encountered this issue or it this a problem with just my device?