This seems pretty strange but happens all the time.
As you know most shows have started back for a new season.
now this means that a new episode of say season 5 is found and scraped, all good so far.
Issue arises when MC can't find a season 5 cover at TVDB.
For some reason it takes the matching season from the first TV show in your list. In my case this is 24
So for the show with the new season 5, it shows the 24season 5 cover image.