I can confirm this bug. The entire image freezes (also the video playback in VLC which was going on). I can move the mouse around, but cannot get any interaction. If i try to drag a window for instance, nothing seems to happen. However... When I take over the computer with VNC (Vino), the desktop is running perfectly fine! The video is still playing and the window I tried to drag was actually moved. So it's just the physical video output which seems to fail? Except for the moving mouse part apparently.
