I wonder if that behavior is related to a recent change in how camping nights are counted for Camping MB under Requirement 9a.
https://www.scouting.org/merit-badges/camping/
I don’t see any changes reflected here, though:
https://oa-scouting.org/about/membership
ETA:. Everything old is new again. We apparently had a similar conversation in 2020 about 4 nights = 3 nights here:
https://discussions.scouting.org/t/oa-camping-nights-error/157909/7
