Found a bug that after watching a synced TV episode on my iPhone after finishing it the episode will disappear from the Watching section on the tvOS app. Still shows up fine on the iOS app Watching section.
Steps to reproduce:
Have a show under Watching (e.g. up to episode 5 of a show’s season)
Sync next episode (5 in example above) on iOS device and watch.
The show should move to the front of the Watching category as expected (on the iOS app) but will disappear from the tvOS watching section.
If I search for the show on tvOS it will have the updated watched status so the only issue is the disappearing part.