Breadcrumb feature does not reflect path at all

Here is an example page. 

Breadcrumb: 5.15 > What's new in Qt 5.15

You can follow the breadcrumb to 5.15, which takes you to Index.
No where on Index can you find a link to "What's new in Qt 5.15"

The same is true for pretty much any non-code page.

Other example pages
https://doc.qt.io/qt-5/windows-building.html

https://doc.qt.io/qt-6/qtquick-visualcanvas-scenegraph-renderer.html

https://doc.qt.io/Boot2Qt-5.15/qtdc-qbsp-installation-guide.html