Comment 2 for bug 1492238

We have a minimum touch-size now for components, including the back button, so the problem may not exist any more. Also, I don't see in the specs any more here https://docs.google.com/document/d/1235LE15c9YDBkma1BSBdK5_S9MeZkXs0RncfqIVPJQs/edit that the title area should act as the back button. The back button and title area are now clearly shown as separate slots in the header.

So I think this bug is not valid any more. Waiting for confirmation from design.