If u see that specific section then you would notice that it has got no image however clickable and pointing to an ad. however
Once i turned the page of Youtube for checking, i saw a couple of videos but did not see something like that. Maybe was a instantaneous technical mistake.
I think because Google owns Youtube, they can do whatever they please. but I have never come across something like that... I'll keep watching it if I can catch a glimpse of what you are saying Thanks Shelly77
i think its not blackhat, sometimes there are errors with youtube... maybe they are doing something and that affects you. but nevermind. they need to make money.