@YouTube here's an issue I've been seeing for a couple of weeks now and I thought to be fixed by now, I'm using YouTube on my @PlayStation 4 & when I play a video doesn't happen all the time I press play & it doesnt play even when I press play once again it plays when I hit back!
What troubleshooting steps have you tried to fix the streaming issue? If you haven't already, try reinstalling the app and make sure that you have the updated device’s firmware/system software — this usually does the trick. Also, you can report it directly via Send Feedback tool.