Firefox 4 and later use a combined Stop/Reload/Go button that is positioned at the right end of the location bar. During the page load process it shows as a Stop button and after the loading has finished the button is changed to a Reload button. If you type in the location bar then that button becomes a Go button. Middle-click the Reload button to duplicate the current tab to a new tab. ---- To move the Stop and Reload buttons to their position to the left of the location bar you can use these steps: * Open the Customize window via "View > Toolbars > Customize" * If the menu bar is hidden on Windows or Linux use "Firefox > Options > Toolbar Layout" * Drag the Reload and Stop buttons to their previous position to the left of the location bar. * Set the order to "Reload - Stop" to get a combined "Reload/Stop" button. * Set the order to "Stop - Reload" or separate them otherwise (Space or Separator) to get two distinct buttons. *https://support.mozilla.com/kb/Back+and+forward+or+other+toolbar+items+are+missing

Problem solved! Thank you for your help!

You're welcome