@TeamYouTube Your site has a new bug. I am watching a livestream and when I hit like, immediately after the 'added to likes' goes away, the like count visibly shifts back down one and the like I gave does not count. Please fix this.
Thanks for the update – as previously shared, you can send a feedback report directly from YouTube, by following these steps: https://yt.be/help/feedback . This will help us identify and fix widespread issues. Make sure you're logged into the account experiencing the issue.