I'm not sure if it's just my phone, or something wrong with YouTube, but I created a lightbox and had it play a video from youtube. Then when I view the site on my phone and select the lightbox thumbnail, it opens the video and shows the squirrel cage loading animation. That is as far as it gets. If I manually click someplace on the timeline it will play just fine.
Anyone else experiencing this, or found a way to fix this?