It takes 4 clicks to mute or unmute on portal TV. Really annoying and disruptive since it's such a frequently used button.

It's further confusing since there is the same icon on the remote, but it serves a different purpose and has no interaction with the onscreen mute button.

It's then even further confusing in that the way the selector highlight moves around the controls is sometimes undecipherable. When you open the controls the selector is sometimes invisible (apparently on some unseen center location) and sometimes it appears on my own video frame (it also sometimes gets stuck there). The logic for how the selector moves across controls in response to arrow buttons sometimes makes sense, but then sometimes is unpredicted and bizarre.

On-screen controls nav needs some UX attention and frequently used controls should be easily accessible with less clicks. These things really take you out of the moment with the people your talking to.