I have an iPad Pro 11 and youtube videos are working for both the app and in Safari. Even so you should not expect apps to work with iOS 13 until the official release is out and the developers are able to release their software that is compatible with iOS 13.
I understand. I meant to report this and not seek solution. I use iPad Pro 12.9.
Hello sorry I am a bit late, I am having same issues where it would freeze and become unresponsive. I would have goto App switcher then click on YouTube again to get it to work.
I am using IpadOS