Wont play 4K after update

Unable to play 4K video on a device capable of 4K video viewing (iPad Pro). Desktop browser mode only let you do 720p no more than that, help setting page says that quality is missing cause I havent updated my browser, however that doesnt help, google block that option on desktop mode no matter the browser, on some browsers dont even let you see desktop mode on YouTube it has to be on mobile mode always. Not point on have 4K video capable device if you can enjoy the 4K content.

Krystofe83 about Google Chrome – The Fast and Secure Web Browser, v58.0.3029.