Ouch. That screenshot is uncomfortable to look at. The window title bars are painfully narrow, the frame borders have inconsistent thicknesses, the Start menu

Ouch. That screenshot is uncomfortable to look at. The window title bars are painfully narrow, the frame borders have inconsistent thicknesses, the Start menu overlaps the taskbar, the vertical centering of text is wrong. The answer to your question is that these replicas are of low quality. This one looks like the whole thing was made by someone (or a committee of people) lacking attention to detail.