Bug report - Show or not show Group Spaces if the user is not a member - Not working

I wanted to try this feature, but I think it is not working properly.

Basically, I have different Groups of Spaces, and thought that if I unmark this checkbox the Group of Spaces should not be showing to the user.

But the only thing it does (at least on my side) is not showing on the spaces the lock icon. The rest, is exactly the same, and shows the default lock screen.

I guess that this checbox intended behaviour is to not show those spaces and all with a lock to the non-member users if you do not want to.