Hopefully they fix the Bluetooth issue with YouTube and Chromecast. It is such a odd issue for me. Chromecast will pause the video because YouTube demands to have the Bluetooth audio back to the app instead of the TV (I have specialized Bluetooth audio transceiver hook up to my TV because of my disability). YT keep forcing the bluetooth audio back to my phone instead of the TV after few second of casting on my TV. This cause the cast to pause the video because my phone detected that audio switched to different source (YouTube). The only way to stop that from happening is to swipe away the YouTube casting notification after casting the video in my phone, then YouTube will stop doing that.
Honestly, I think the issue is the bluetooth itself, it an amazing but extremely fragile technology. My Win 10 laptop crap the bed with the internal bluetooth. And it crap the bed with the USB bluetooth transceiver as well. Microsoft been having issue with bluetooth. The same for OSX, Apple have their issues with it. They recently released a update to fix the bluetooth issue in Big Sur M1 and that didn't fix the issue.
Honestly, I think the issue is the bluetooth itself, it an amazing but extremely fragile technology. My Win 10 laptop crap the bed with the internal bluetooth. And it crap the bed with the USB bluetooth transceiver as well. Microsoft been having issue with bluetooth. The same for OSX, Apple have their issues with it. They recently released a update to fix the bluetooth issue in Big Sur M1 and that didn't fix the issue.