I'm using Lightroom 4 RC 2. If I have several images selected and displayed on a second screen the image with main selection will show some desaturation on the second screen and in the thumbnail below the image on the main screen. The main image is fine. If anothe r image is selected then the original image will look correct in the thumbnail and on second screen and newly selected image will show some desaturation in the thumbnail and on the second screen. Anyone else noticed this?