This has been reported (again). It was thought to have been fixed, but apparently is still out there in the wild.
Original report (and reported fix):
https://discussions.scouting.org/t/mass-emails-being-sent-for-past-events/512068/
Re-reported here:
https://discussions.scouting.org/t/duplicate-scoutbook-messages-still-being-sent-after-fix/512197
ETA: Apparently I type too slowly and you already found the previous threads. :^)
