If you look at the above image, my cursor is hovering over the left side of that pixel, and the info palette is correctly reflecting the RGB values of 255,255,255. If I move my cursor to the right half of that pixel, it starts reading the RGB values of the ADJACENT pixel (251, 251, 251)
Why? Is this a bug or a feature?
What is the Sample Size in you Eyedropper tool set to?
"Point Sample". Note that these readings are regardless of which tool I am using.