While using Facebook Container, Facebook is slow to load, temporarily locks up for short periods randomly, quite often, sometimes fails to completely load page. During some of these conditions, I can scroll with my wheel, but the scroll control in the sidebar does not work. And often, what the screen shows is not what the Mouse sees. I click on a button (Share button for instance) and instead of acting on that, it loads a new tab from some other link on the page.

I turned off the Facebook Container and ALL of the problems disappeared. this started write after the last upgrade.