Created attachment 8732283 [details] start.jpg User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safari/537.36 OPR/36.0.2130.32 Steps to reproduce: Click open the browser enter the url details on the address bar and click and the add tab button once with single left click. multiple tabs open with same url information Actual results: multiple tabs get open when connecting to the url in th original address bar Expected results: only one of the page with actual link should have openeed instaead of thhe multiple tabs
I don't understand your steps to reproduce. Is it reproducible with a fresh profile? https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles
Have you tried if you see this issue in Firefox's safe mode, too? You can restart Firefox into safe mode by using the 'Restart Firefox with add-ons disabled' entry in the 'Help' menu. This will also disable graphics hardware acceleration and some JS engine optimizations, not just extensions and plugins. See https://support.mozilla.org/kb/troubleshoot-firefox-issues-using-safe-mode .
Closing this as incomplete while we haven't got more details about when/where/how this happens. Please reopen if you can answer the questions we asked earlier.