When using the “Bulk add” feature, the group count on admin/groups/custom is not incremented. Only after adding a single user from the normal admin screen does that counter get properly updated.
Yes, the count update is done lazily in a scheduled job.
Do you know what schedule that’s on? It was at least 12 hours between my bulk add and the manual add.
I think it’s the Jobs::EnsureDbConsistency