I’ve run into the same issue. I just added a couple new events in July, but neither appear on the calendar when Family Events (our default) is selected. Everyone in the troop is invited to both these events. I see them when I choose All Events or My Events, but they disappear when I choose Family Events. Myself, my wife, and my son (a scout in our troop) are all invited. When my wife logs in, she only sees the events when she chooses All Events – the events don’t appear under Family Events or My Events.
Events that were already on the calendar are not behaving this way.
I just changed our default to All Events so the events are visible without adjusting anything, but I would like to get the default back to Family Events.