Wrong routing in navigating JSON structure when using breadcrumbs

When navigating through the JSON configuration structure one gets routed wrong when clicking through it using the {...} menus and breadcrumbs. An example is https://caddyserver.com/docs/json/apps//tls (notice the double slash, leading to empty 'Description' and 'Field List' Sections).

How to reproduce

1. Go to https://caddyserver.com/docs/json/apps/tls
2. Click on apps in the breadcrumb navigation JSON Config Structure › apps › tls
3. Hover the {...} menu and click tls again again
4. You will end up in https://caddyserver.com/docs/json/apps//tls

Suspected Reason is that the breadcrumbs lead to the destination with a trailing slush, while the {...} menu items add a prefixed slash leading to double slashes.

Start by reproducing the breadcrumb and {...} menu navigation from the JSON configuration page, especially the transition through apps to tls. Trace how those links assemble /docs/json/apps/tls; done means navigation no longer produces /apps//tls and the Description and Field List sections load correctly.