When you add multiple episodes of a TV show at once ( or within 21hours) they are combined into a single listing on the “Recently Added in TV Shows” hub. if all of those episodes are from a single season. You will notice under the poster is shows “Season 1” as opposed to “1 season”
If it says something Season 1 or Season 8 it means when you click on that poster is is only opening that season, not the show a whole. In the same image an example is when added episodes of Season 4 of the show “When Calls the Heart” the Recently Added Row shows I added episodes of season 4 and if i click on that poster it will open season 4, but the Start Watching row/hub correctly shows that I only have 1 season of it because it represents the show as whole
In your screenshots or mine if you actually click on the title of the show (rather than the poster) it will take you to the show as a whole.