I'm not sure if other people have this issue, but I find that the area where clicking activates one of the buttons below the video to be much taller than the buttons indicate. In fact, the area where clicking initiates a chefsteps like extends well over the play button for the youtube video. This causes accidental likes.
For reproducibility, I'm using a chrome on a small macbook. Let me know if you want any more information or a screenshot or something.