Windows 10 Taskbar

It has been more than 20 years since Windows 95, and taksbar still doesn't function properly:
http://www.tomshardware.co.uk/forum/id-3053045/taskbar-fullscreen.html

It is like I'm using some crappy Linux, developed by hobbyists. And I remember pretty clearly that Windows XP had properly working taskbar. So why it is so broken now? Have Microsoft decided to turn their OS into Linux? Guess it is finally the year of Linux desktop!

>>13
if he had source code then it wouldn't be reverse engineering, would it?