@TeamYouTube I was using the YouTube app on Android and the "latest videos" blue refresh bar appeared. I tried to click it, but it took me to the ad it was covering. After going back, the same thing happened when it appeared again and I tried to tap it.
Hmm, that's odd! Make sure that you're using the updated version of the app. Also, try using another phone and see if it does the same thing. Let us know how it goes!