O pior prêmio da interface do usuário vai para o Google. Muitas pessoas estão tendo esse problema. O Google respondeu ,
Grace Y. said: Hi there,
Thanks for the screenshot. So, I tested out Youtube myself and have figured out why your'e getting mirroring as opposed to the Youtube app itself. First, there was a misunderstanding on my part, and tab casting will start up the Youtube app. As you can see in the picture below, when you first select cast in your Chrome Browser, you'll see a list of your Chromecast devices. Instead of selecting your casting device, select the "Cast to" dropdown menu.
Afterwards, you'll the next screen asking you to select your source:
Instead of choosing "Cast tab", you should be selecting the youtube.com option. Selecting this option should start up the Youtube app on your TV.
Hope this resolves your issue, and let me know how it goes.
Best, Grace
É isso mesmo, para enviar o URL para o Chromecast, você precisa clicar em "Transmitir para". Se isso não for Mystery Meat , não tenho certeza do que é.