It works ... for my needs. I wanted to keep AdBlock installed but turned off for YouTube. As long as I keep another extension disabled (Enhancer for YouTube), this extension prevents the YouTube Ad Warning message from appearing. If Adblock is turned off for YouTube, this extension doesn't interfere with full screen or cut off the pause and other controls. If Adblock is enabled on YouTube, then the YouTube controls are cut off on the left and right side. I'm amazed it works as well as it does given Google's anti-adblock's efforts.