Recently, if I start watching a show in Up Next and then exit out of it before finishing it, it no longer appears in Up Next, and I need to go into my Recordings view to find it. I don't believe this is the correct behavior. This is happening on my AppleTV, but my iPhone still shows the show in progress.
v2021.12.31.0012
Major improvements to Up Next
• If you started watching something, it will now reliably show up in Up Next so you can continue watching