The controls to play, pause, scrub/rewind, mute etc that are on the Cast viewing page are not visible or available when playing back a Cast in fullscreen mode (by toggling fullscreen).
Only space bar (to pause and resume play) works.
This was the case for both shared casts while logged out and watching my own casts, when logged in.
Is this intended behaviour?
Can we create controls that appear when you move the mouse, then fade away again, kind of like YouTube at full screen?
I've just realised this is also the case for Pro video playback!