Router: Inconsistent behaviour with parent route parameters

[MercinaM]

🐛 Bug Report

I'm using the route /first/second/:parameter/third, and I am noticing inconsistent behaviour in the router lifecycle hooks.

When I navigate to the route from /home via a link in the app, the "second" component receives the value of ":parameter", and the "third" component does not.

When I navigate to the route a second time while already on it, this time with a different value for ":parameter", both the "second" and "third" components receive the value of ":parameter".

When I refresh the browser (F5), only the "second" component received the value for ":parameter".

Repro link https://stackblitz.com/edit/au2-conventions-ms17rt

🤔 Expected Behavior

The "third" component should either always receive the parent route parameters, or it should never receive them. I do not know which behaviour is expected, but it should definitely be consistent.

😯 Current Behavior

Inconsistent.