Presently when I open a new window Firefox opens it in the same tab. This causes new windows to hidden in, or hidden behind, a single tab on the far left side of the tab bar. I don't want this. I want to view all windows as separate tabs displayed left to right across the tab bar. There is probably simple preference setting to accomplish this but I can't find it. Maybe there is another setting or an extension that prevents what I want to do. Anyway I hope someone can help. Searching through my History trying to find a web page I want to return to is driving me crazy!