''Duplicate post, continue here - [https://support.mozilla.com/en-US/questions/795149]'' Suddenly, my 'new tabs' function is not working... Pushing + next to current tab... nothing.. button looks like I am clicking it, but nothing happens File ---> New Tab NOT WORKING Ctrl + T ---> NOT WORKING Right clicking on a link in a window and clicking Open in New Tab... That works But, the bottom line is, I can not open new blank tabs. Please help! This just started this morning!