Regarding Amiga screenshots, they've taken care to get the DigiPaint aspect ratios right, but the Workbench 2.04 screenshot is in a resolution that comes from an add-in graphics card rather than the Amiga's custom chips. It's a resolution Workbench wasn't graphically designed for, so it looked wrong in such a resolution at the time. If you double the screenshot's height, then everything (text, icons, window gadgets etc) looks right.

It would be more representative of the OS, and the era, to have a height-doubled "HiRes" screenshot, 640x200 or 640x256.