Please copy and paste the following images to your computer.The link to Image 1 The link to Image 2
My system is Windows 7 Home Premium 32 bits. Image 2 is a resized version of Image 1.
On XnView for Windows (as well as my other image viewers), the two images look exactly the same while their size fits the window.
On XnView MP 0.53, they look subtly different while repeated pressing the Page Up and Page Down keys, which causes repeated changing between two images.
I can elaberate on the differences if you fail to perceive.
Do those subtle differences count as a bug which should be fixed?