Content Translation saves the translation progress automatically, when the user makes a content modification and tries to leave the translation editor too quickly for auto-save to complete, a dialog is shown to warn the user. Currently in version 2, the dialog is shown when the user leaves the translation clicking the "< All translations" button (as shown below), but it is not shown if the user clicks the back button of the browser instead.

This is a regression compared to CX1, and the expected behaviour is to show the same dialog when navigating away using the browser controls too.