Using the latest AppleTV beta as of this writing (14353) it seems the EPG is broken again. Lots of empty placeholders and channels start pressing the play button on the remote, not pressing the touchpad on the remote. Same source EPG works fine on iOS. Seemed to have happened with this update as far as I can tell.
Also, it scrolls back and forth like crazy, probably due to the empty placeholders. Regardless it is completely unusable. Rolling back to 2.13 is fine so you got the ooooool’ regression going.