Unable to browse through other videos while weatching a video #317

Hi,
I used to be able to push "down" button (twice) and see other videos/cards while watching something.
Now, when I press the down button once, player buttons come up, when I press again- nothing happens.
Sometimes, I'd like to listen to the audio only, without watching a video and be able to search through other videos.
What happened to this future?