The timeline/toolbar at the bottom of the screen has lost its 'auto-hide' function in full screen mode. It tries to auto-hide, but pops back up immediately, so it flashes on and off...on and off...on and off, at a 2 second cycle rate. Needless to say, this is a real buzzkill having to watch a show or movie with that toolbar always visible on screen, cycling on & off And no, my cursor is not hovering over the timeline/toolbar (which would normally suspend the auto-hide function). Once again, this problem only occurs when you watch in 'full-screen' mode.