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!

And I'm not talking about some old obscure game for Windows 3.1, that fails to enter fullscreen. I'm talking about watching fucking youtube videos with Firefox and playing modern games, that were especially crafted for Windows 10. That is fucking achievement! Congratulation, Microsoft! I'm sure Bill Gates has sold his shares already.