To be fair, Yeah, I’ve had that happen before and it’s usually not “Google being Google” for once — plugin updates can absolutely break stuff in dumb little ways. I’d check the boring stuff first: cache, sitemap, robots, canonical tags, any schema/plugin conflict, and whether the update changed page speed or injected weird JS. Had one site tank because a plugin update was noindexing a chunk of pages without making it obvious. If it really lined up exactly with the update, I’d roll it back and see if traffic comes back. If it does, you’ve got your answer. If not… then it’s probably just the usual algorithm nonsense and the timing’s screwing with you. Could be wrong though.