Hi,
So I tried myself and didn’t get issue as you can see : https://drive.google.com/file/d/1-SGyn8TOdcJhTcaGpZQILb4k5Vc3TE-6/view?usp=sharing
Could you try to uninstall Youtube and re install it * ?
Is the auto detect mode enabled in QGO ?
From where do you start the Youtube app ?