Not sure if this is the same behaviour across other players, but on tvOS, there is (IMO) a UX bug in what happens when you tap a movie poster in different contexts.
In most contexts - from the dashboard, from the library, from search, and from the “related movies” display when viewing an individual movie - tapping a movie thumbnail will bring you to the detail screen for the movie. This makes sense!
But after watching a movie, when the video shrinks and you’re shown related movies, suddenly the behaviour changes. Tapping a movie thumbnail now means “play.” This is bad UX not only because it is an outlier from every other instance of the exact same thumbnail action, but also because it’s a far greater likelihood that a user will want to “see details” on a movie before jumping right in and playing it immediately after watching another movie.
Even in the case of TV shows, there is already and “auto-play next episode after countdown” feature, so I don’t think this “thumbnail = play” behaviour makes sense in the TV show context either.
