No way to go "Back" while using YouTube app

  • While using the YouTube app, none of the usual buttons to go back work. For example, if I start from the homepage and home page and select a to watch and then proceed to watch the next video that is suggested and then I want to go back either to the previous video or to the homepage I would expect to hit back twice to go to the homepage or once to get the previous video. However neither the last button or the little back button between the volume and channel changing rocker buttons do anything. I did find a method to get back to the YouTube home screen though, and that is to scroll all the way down to the bottom and then select the home button which takes me back to the YouTube homepage, which is not convenient if I just wanted to go back one video.

Note: I did the "app reset" suggested in a similar topic on this forum and while some others reported that it worked for them, it did not change anything for me...

Note 2: there is an icon labeled Back in the lower right corner (the pictogram looks like the replay button on the remote) but there is no way to "select" it (and then press OK) nor does the Replay on the remote work or do anything while in the YouTube app. 

Looking for suggestions...