Hi,
I have a collection A which has a hasOne relationship to a collection B.
I want to hide the collection B from the left bar so that forest admin users can’t access the list of elements of that collection, but I still want them to access the details view by clicking the link available in collection A elements details view.
Unfortunately, this is not possible, as soon as I hide the collection B from the left bar, the link disappears in the details view of the elements of my collection A.
This can be replicated in your demo by hidding the Addresses collection and trying to access the address from a Customer.
I’m not sure it’s a bug though, but I don’t understand why it works that way so if you have some insight! 
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