Thumbnails broken, issue is visible on front page

At the time of writing this, thumbnails are broken. They load when clicked on, but not from when they're viewed on a main menu.

Also, thumbnails for various works are still broken, along with the genre cover art for certain tags.

I'm also seeing the broken thumbnails. It was working a few days ago when I was last on here. It only appears to be the wrong page for me.