All other artwork appears as far as I've seen, apart from episode thumbnails.
Specifically, I can go to TV shows, select a show (the cover art here shows), and see the fan art background. But what I dont see are the thumbnails of each episode at the bottom of the screen. I can scroll left and right to see the titles of each episode, but no image appears for them.
Although if I get the episode info from here, the thumbnail shows up on the left of the page next to the description, so the artwork is definitely all there in my database.