emberjs/website — pull request #1299 by praxxis (2014-02-14 20:39:13+00:00)
Title: Clarify URL update behaviour when using `transition.abort()`

Using the browser back button in conjunction with `transition.abort()` can lead to the browser URL being out of sync with what's displayed in the app. This commit adds a note explaining that `abort()` can occur after the URL is changed.