When having more than one instance of firefox running (for example for use on more than one monitor) if i try to load a website in a new window firefox instead of opening the website in the new window, jumps focus to the same website in the other instance of firefox, Very irritating behavior, is this done on purpose? Or is there any way to toggle a setting to stop it from doing this? I've probably not described this very well but there's a number of circumstances where this behavior is not desirable. so: Firefox instance 1 on monitor 1, and firefox instance 2 on monitor 2 website 1 is open on instance 2 monitor 2, i then go to the same website on instance 1 screen 1, but the website does not load on that instance, i get bounced to the website 1 tab on firefox instance 2 monitor 2. Whereas desired behavior would be simply loading the website on the instance requested regardless of what's on the other firefox instance.