attendees to events not counting as attendees to event's world

I have made a couple of worlds and notice that something is wrong with the number of people who have visited my latest world.

https://oculus.com/vr/4973891109378711/

I have hosted a couple there with plenty of people there but "My Horizon Creations" states that the world has not had any visitors. I guess there are 3 possibilities

1-The visitor count reset every time I make a change and republish the same world.

2-visitors to the world during an event are not counted as visitors to the world.

3-some people just don't count for some unknown reason

Please help so I can understand such a simple matrix as "how many visitors your world has had"