I'm having a similar problem on Facebook with videos not playing ever since the update yesterday. I'll click on the video, it'll play for a minute or two, and then freeze up with the wheel spinning forever. Yet the same video plays perfectly in Chrome.

In addition, Facebook Messenger is not loading for me either since the update, also loads perfectly in Chrome, which I posted about in another thread. I'm not sure what they did with this update today, but it definitely seems to have some bugs or something weird going on. None of this stuff was happening until I downloaded the update.

At least you have a minute or two! :-)