I’ve had this problem with my videos where the likes suddenly just drop. For example my recent video had 31 likes an hour ago and now 25. I know people aren’t just going back and “unliking” so can you explain? @TeamYouTube
It's normal to see views + likes shifting as YouTube algorithms verify if they're real—from humans not computer programs. It can slow down, freeze, or adjust during this process. Learn more here: http://yt.be/help/Jgao