I have my inboxes window open, and click on Reply to a mail. A second window opens, and I start typing. At any point focus switches back to the inboxes window, causing havoc if any of the letters I am typing have effects (like deleting messages !). This must surely be a bug - is there any way around it ? The exact same issue happens with Firefox, though it is less irritating and dangerous. I believe that this is a Mozilla issue - the same thing does NOT happen using Chrome.