Private Video - YouTube Not Available

I created some family videos and loaded them to my YouTube account. I marked the videos as Private which would allow my friends and family to view the videos as long as I shared it with them and they are logged into their YouTube account. However, the YouTube iPad app will return an error (YouTube Not Available) when they try to play the video from the email link they receive from me. Again, they are logged into their YouTube account and I have shared the video with them. I noticed I too receive the same error when trying to access my own Private videos from the email link.

There is no error when viewing these videos from a browser, it's only a problem when using the iPad YouTube app.

I think this is a bug with the iPad YouTube app. It's easy enough to replicate the issue. How can we get this fixed?