Saw this question 2 years ago with unhelpful answers, like right clicking on an item - right clicking is not an option with a track pad, and none of the track pad options like control-click or option-click worked to open any items in a new tab (and I don't see why people who answer questions don't think about the hundreds of millions of people who use track pads, or Magic Mouse which has no right-click ability). Chrome has this very convenient feature that keeps a history item from opening on top of your current page - often you want to compare or add what you saw in history to what you're seeing on the current page without making the current page disappear and having to backpage, thus losing the history page you want displayed at the same time. This seems like an easy enough feature to include that FF is ignoring, like it ignores the longtime request that Firefox enable cut & paste to retain website formatting and functions when pasting into an email (and screenshots don't retain functions like links). If there are enough inconveniences to using FF, people use another browser, and if Chrome and Safari can include such conveniences, so can Firefox.