Concept tree not showing narrowers

[nicholascar]

The expandable Concept tree on many vocab's home page doesn't expand showing narrower concepts, e.g.

https://gsq-prez.dev.kurrawong.ai/v/vocab/defn:address-classes

which should allow Thoroughfare to be expanded, as per the data shown on the Concept's page:

https://gsq-prez.dev.kurrawong.ai/v/vocab/defn:address-classes/ddrss-clsss:thoroughfare

[nicholascar]

I think the hierarchy only works with broader, not narrower, e.g. for Borehole Status:

https://gsq-prez.dev.kurrawong.ai/v/vocab/def:borehole-status

see

https://gsq-prez.dev.kurrawong.ai/v/vocab/def:borehole-status/brhl-stts:drilling-completed which indicates its braoder term

We need the UI tree to understand narrower as well as, or in addition to, broader

[jamiefeiss]

Upon inspection of both https://gsq-prez.dev.kurrawong.ai/v/vocab/defn:address-classes and https://gsq-prez.dev.kurrawong.ai/v/vocab/defn:geocode-types, it looks like the narrower concepts aren't being shown under the expanded parent concept as those narrower concepts are also top concepts. For example (shortened for simplicity):

<https://linked.data.gov.au/def/address-classes/thoroughfare> skos:inScheme <https://linked.data.gov.au/def/address-classes> ;
    skos:narrower <https://linked.data.gov.au/def/address-classes/street> ;
    skos:prefLabel "Thoroughfare"@en ;
.

<https://linked.data.gov.au/def/address-classes> a skos:ConceptScheme ;
    skos:hasTopConcept <https://linked.data.gov.au/def/address-classes/street>,
        <https://linked.data.gov.au/def/address-classes/thoroughfare> ;
    skos:prefLabel "Address Classes"@en ;
.

Where "street" is a narrower concept of "thoroughfare", but "street" is also a top concept.

Is this a valid scenario where narrower concepts can also be top concepts?