Hi!
I am testing Group Event on a Closed Group (which I thought is an Invite Only Group) and I was surprised that users that are not Member of the Group were able to see the Event I just created. Upon checking what Group Type, found out that the Group is Closed Group so logically Events are set to Private.
So, I went to change the Group Type to Invite Only and there are no prompt or validation for Group Events that were previously created that the Group access type has been changed. I edited the Event and simply clicked on Apply to All Events and the Access has been updated.

It's cumbersome to validate things, I know, but just want to point out that things like this could happen. If it's not fixed it would create confusion for users when they Ask to Attend an event that they're not supposed to see.
Thanks!