@flic-l Yes I'm getting the same thing, it turns on my TV via Chromecast, opens the YouTube app, but just shows the YouTube logo and that's all it does! Would love a fix for this?

Was thinking of getting a hub but not interested if it does not work. I have the same issue and any other chrome cast function just does not work. I have 2 phones and one works perfectly fine when the other one doesn't so it just seems to be a software issue or it could be not having a certain permission on my phone. But I have allowed everything I can think of and there should be more information on what permissions I need to enable. The fact that this is a problem and nobody has been able to get a fix for months makes me wonder if this will ever get fixed.