I have searched everywhere on the internet to solve this problem. The most recent link I found was: https://support.mozilla.org/en-US/questions/1120624 This link does not help me solve my specific problem. All I want to do is permanently DELETE the list of "Recently Bookmarked" when I click on "BOOKMARKS" in the menu bar. Some entries in this list have so many characters (words) that Firefox expands the entire width of my laptop screen. This makes finding and clicking on other bookmarks in various folders very annoying -- you must scroll your cursor back and forth across the entire screen -- far left side to far right side -- and right side to left side. Help! Thank you in advance.