RoutingController.replace does not test guards before removing

[Adam-Langley]

Fairly straightforward issue, replace removes items from the stack before checking whether it will be allowed to push the new route.
Unfortunately, it does not test any route guards owned by the new route, before removing any routes.

The result is if the route passed to 'replace', has a guard that will block the navigation, then half the navigation is completed (the removal parts), leaving you in an unexpected stated.

We are using route guards to prevent the user from accessing areas of the application given certain conditions.
When they are navigated deeply within the application, clicking on a button to navigate them somewhere they are not allowed, will jump them "halfway" - the expected behavior is that none of their navigation request is performed.