This is still a problem with iOS 7 on iPad. The symptom is that if you are on a page with a YouTube embedded video the first touch that should represent a hover reveals the hidden content for about 2 seconds and then follows the link. The Vimeo embed does not do this.
Because this affect doesn't appear until you are on the page with the video it isn't easily spotted and going to a page without YouTube fixes it.
I will continue investigation and post here if I find the cause and a fix.
Incidentally, I'm using a custom responsive theme based on underscores.me.