Thread:ShitaraRen/@comment-24167698-20131213165519/@comment-24167698-20131214060835

It supposedly selects an image from the part it can parse that's bigger than 75x75 pixels. Since Cursed Mask 'thumbnail' looks 40x40, but is in fact 150x150, it selects this file since it probably has trouble parsing into tabber.

I think uploading real thumbnails (40x40 ones) for use in Event Navbox should eliminate the problem. I tried doing it with Occult Mask thumbnail (uploaded the small version), I will keep a look if Wikia will eventually re-index category images and stop picking it up. It will probably take some time, or may not happen at all. However, this thumbnail is the only one that can cause that problem.

I did not do it for other thumbnails, since it's a bit experimental at the time.