I'm having a problem getting my wallpaper to size correctly on my monitors. I have two identical Dell flat screens that optimally use 1920x1080 resolution. I had my wallpaper images being fully sized to the monitors but after the last Windows Update, suddenly the image is showing in the center with a black box around it. I tried resizing the images to 1920x1080 but the result is the same. I have checked the box in Wallpaper Settings that allows DF to automatically resize the image without notice. I have tried changing the values to Stretch, Fix Height, Fix Width and both Fit Best options and the result is the same. When I set the Sizing to Tile, the image sizes itself to the entire monitor but is now tiled.

Can anyone tell me what's going on here and how to fix it?

Okay, I solved my own problem:

Somehow, the scale setting on the Adjustments tab was set to 85%. I don't remember doing this, but when I changed it back to 100%, everything works as it should.