ember-example-replace-push-state

Problem

In certain cases, router.replaceWith calls pushState on the window.history, instead of replaceState. This adds an entry to the history, which messes up the back button.

Debugging Overview

When refreshModel is true for a query parameter, Ember takes the replaceWith transition triggered by the user, aborts it, because it thinks the query param is stale and creates a new transitionTo transition, which ends up calling pushState.