User Unheard, you are brilliant to provide a temporary workaround until Dishita has a chance to overcome YouTube alterations.

To those of you who just jump on here and complain about the button disappearing, spend just a few minutes looking before you create noise and you will find brilliant post like the one from Unheard that gives you a solution.

Just for that I'm not even going to tell you what the workaround is. Make the effort and look through the posts. And if you aren't tech-savey enough to use the info to do the work around, tough.... you'll just have to wait.