No, I've not noticed this. Slightly off topic, what I have noticed in the Apple TV+ app, is that BBC and C4 programmes that I have watched in the long-distant past are still there in Up Next, even though they are no longer available on iPlayer or All 4. Doesn't help with your query though, sorry.
Seems broken again on over the last few days. Tried disconnecting BBC from the TV app and reconnecting to no avail. The BBC Up Next works and propagates within BBC TV app/web and TV app on iPhone & iPad, but just not on ATV.