As of the latest beta, Channels no longer shows any activity. It now always states "idle" when playing a movie, or streaming any channel. Everything is up-to-date, server was rebooted to be sure, client was checked and rebooted as well. Still no activity now shows.
Server: Synology 7.2
SiliconDust HDHomeRun Flex 4K ATSC 3.0 NextGen TV: 2/4 Tuners HDFX-4K
Client: Apple TV 4K 64gb