Oof, that might have been spillover from the bugfix above this comment. Sorry about that! If it wasn't that, something like that will also happen if the underlying tagsets happen to change - not sure if that was what happened here!

I'll go take a closer look for Battleship in particular and if I can fix it I will. Is it happening pretty much on every rescrape right now? [Edit: if there are particularly heinous fandoms that always seem to blip around, it'd be super helpful to know which they are!]