Z2jh in api only mode allow all routes to hub after install

Setting hub in api only mode, does not work immediately after installing z2jh chart. It allows all the routes to hub not just the api.
hub_routespec: "/hub/api/"
When I look at the proxy routes, its set up with the /hub/api
It works after sometime with out any intervention. I could not figure out exactly how this starts working. I have observed this with both the stable chart and a recent chart. Is there something that I am missing? Thanks!