Forgive me if I just haven't found the right combo of search terms to find this issue elsewhere. When playing Siege of Paris on PS4, I had the Legacy of Saint George Chapter 1 quest marker about finding the second clue pop up on the map during regular play. It was inside Villa of Amiens, which of course I couldn't enter at that point. I thought this was normal (maybe a new way to get the clue?), but found I couldn't find the clue anywhere. Once I finished Siege of Paris and returned to England (and now in my ps5 version on ps5), the quest popped up again, this time in the middle of Ledecestreshire (i.e., not even on a river this time). Traveling back to Francia, it appeared in the Villa again.
I haven't found a post anywhere on this topic, whether this is normal or a bug, so I'm stumped. The clues are only supposed to show up during river raids, right?