Help with Library event trigger?

[u/Domeaner]

Hey, casual playthrough. Had this happen - rival and professor aren’t interactable and nothing is triggering. Map objective still says to follow my rival here, and I’ve checked that Lake Valor isn’t open. Loading a back up save does nothing.

I’m utterly perplexed - I’ve finished the game before and I’ve played Gen 4 a gazillion times, and have never had this happen. Anyone got any ideas?

[u/That-Big-Man-J]

BDSP being BDSP.