Sharing screen in Google Hangouts doesn't update render view

I recently tried sharing my UE4 editor screen while in a Google Hangout session and the render view stayed frozen for people on the other end of the hangout. Like, it transmitted the initial display of my scene to everyone, but when I started navigating around, the render view wouldn’t update for everyone else. Any idea what’s going on here? Is it some DRM thing? Sharing my screen with Skype works fine :confused: