Hi, you can duplicate a tab by holding down Ctrl while clicking on Reload, or click the mouse wheel on Reload. If you want to leave feedback for Firefox developers, you can go to the Firefox ''Help'' menu and select ''Submit Feedback...'' or use [https://input.mozilla.org/feedback this link]. Your feedback gets collected at http://input.mozilla.org/, where a team of people read it and gather data about the most common issues. ''If your question is resolved by this or another answer, please take a minute to let us know. Thank you.''