Why does one picture in my Recents look a different size, and how do I even it out?

When your Recents shows only episodes, each card shows the episode's picture at the shape it was uploaded. Most shows use their square cover for every episode, so one episode with its own wide photo comes out shorter and breaks the row. Open the page, open its Recents block, and set Picture Shape to Square or Wide. Every episode picture then sits in the same frame, cropped around its focal point, and the rows line up. As uploaded, the default, keeps each picture's own shape. When your Recents also shows social posts, every picture always keeps its own shape and this setting has no effect.