I noticed a very slight issue when uploading an icon to my game.
So I made a testing image to see if I was correct:
As you can tell there is a yellow border of 1px.
When displayed on roblox you get this:
It seems the image is cropped about .5 of a pixel from the right and bottom side.
I tried both zooming in and out and it happens regardless, and on mobile as well, was not able to test console.