When watching something in Emby on my AppleTV, and I use the down arrow on the remote to fast forward or rewind or chose a subtitle, and then press the back button to get it off the screen so I can get back to the video, it instead causes the video to completely stop - taking me back to its detail page; where I must then tell it to resume. Although I do understand that by simply waiting a few extra seconds it will automatically dismiss itself, I would suggest the back button dismiss it on demand immediately (or in addition). This is the way YouTube, Plex, Amazon Video, and practically everyone else does it.
Thanks for your time.