Created attachment 131792 [details]
Example QML file to reproduce the bug

SUMMARY

When navigating from "foo/bar/baz" to "foo/bar/baz", Kirigami.PageRouter reloads page "bar".

STEPS TO REPRODUCE
1. Load attached example with "qmlscene example.qml"
2. Press button "foo". Route "foo/bar" loads.
3. Select second item in the list. Route "foo/bar/baz" loads, but item gets unselected.
4. Select second item in the list again. Route "foo/bar/baz" loads, item gets unselected again.

OBSERVED RESULT

Already loaded pages are reloaded.

EXPECTED RESULT

On step 3, the result should be the same as if .pushRoute("baz") was used. On step 4, nothing at all should happen.

SOFTWARE/OS VERSIONS

Qt version 5.14.2, Kirigami2 version 5.70.0, Debian sid