When you use Firefox’s search bar, the results are displayed in the current tab. This can get rather annoying when you are don’t want the current tab to leave the web page you were on. To make your search results appear in a new tab, follow these steps:
1. Launch Firefox.
2. In the address bar, type about:config and hit Enter on your keyboard.
3. Scroll down to browser.search.openintab and double-click it to change the value to True.
Now when you use Firefox’s search bar, your results will always appear in a new tab.