Um, did I miss an announcement or something? I just noticed that, for some reason, all of the slider galleries are displaying as if MinimalistSlider as been added to the global JS. I am seeing this on multiple wikis; most, if not all, of them don't use the script; and I have not imported it via my personal global JS. As such, the only way I can think of this happening is if a change was made to Wikia's global JS.
Wow! How did I mess that one up so bad? I guess I just assume most dev wiki things involve JS; completely forgot the MinimalistSlider is CSS. Thanks. It appears I never removed the import from my global CSS from when I was trying to help someone with it.