I have been discovering countless "bugs" with youtube ever since Ive used it regularly since 2011 THAT NEVER GOT FIXED.. and I believe that Google intentionally just leaves them like that. it is very bewildering when you discover how careless Google is.. but I BELIEVE this is not carelessness its intentionally shady behaviour, that i cant fully get to the bottom of.. maybe its taking the easy way like Tumblr where you have to post around 200 posts for your content to be indexed and shown in the search results, this aproach is to give u the illusion that everything u see is everything that exists, when in reality they are hiding alot from u.. they say its to prevent spam.. thats what they say..