They are rectangular/square, just like the taskbar icons in Windows 7 that everyone I know loves.
Take a closer look.
The taskbar icons in Windows 7 have glass effect, nice diagonal gradient and rounded corners. Try hovering the mouse cursor over icons of running applications: there is even a sleek little lamp effect which follows the cursor, and the color of that effect matches the application icon. Also the icon of the active application has brighter background than others.
These kind of small touches are missing in the Windows 10 UI.
Cock-nugget.
Haven't heard that one before.
Anyway, the main reason Id never recommend anyone use a microsoft browser is they are always tied to closely to the OS and just an easy gateway for malware.
In which way tied? In Windows 98, Explorer depended on the IE engine, but that's about it.
These days both IE and Edge run content in a hardened sandbox anyway, which malware will have hard time escaping.
Systems programmers are the high priests of a low cult. -- R.S. Barton