Mozilla Firefox is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows a number of additional features that work with you to help you get the most out of your time online. Here is an instruction to tell you how to stop Firefox from jumping to Tabs by modifying the settings from the configuration page.
1. Download and install Firefox, open the program and type “about:config” in the address bar, then click the “I’ll be careful, I promise!” button to continue.
2. Type “browser.tabs.loadDivertedInBackground” in the search box and press “Enter.”
3. Double-click on the “browser.tabs.loadDivertedInBackground” entry.
4. Now you’ve successfully set the program and then all tabs will open in the background.