Why doesn't thumbnails for the movie "Moonlight" not work?

It's not a major issue or anything, but for some reason thumbnails never work no mater what image i try to use. Like here for example: www.listal.com/list/my-favorite-films-henrik4075 If you scroll down to my favorite films of 2016 list it looks like Arrival is number one now instead of Moonlight. The only movie i have this problem with is Moonlight for some reason.