The app that enables the e-edition of Metro newspaper to be read on-line no longer works with Firefox (http://e-edition.metro.co.uk/home.html). The edition preview disappears off to the bottom right and when you click on what can be seen the page forward and backward controls at the top disappear above the top of the window. Works fine with Google Chrome. This is the second problem I've found with Firefox this week which works properly with Google Chrome.