@TeamYouTube
The casting icon has disappeared on my youtube tv app. I like casting to my TV as it is easier to find what I'm looking for on the phone, but not sure what happened to it.
Thanks for reporting this to us – can you check if you have installed the latest version of the YouTube TV app? Uninstalling/reinstalling the app can also do the trick. If the issue persists, we suggest that you contact our live support team here: https://yt.be/help/1oSc