Hi, I've been using the following in userChrome.css for many years #menu_close { display: -moz-box !important; } to restore "Close Tab" in the File menu, based on cor-el's response regarding restoring menu_bookmarkAllTabs here: https://support.mozilla.org/en-US/questions/799856 This stopped working some time ago and I am finally getting around to asking why. I do have toolkit.legacyUserProfileCustomizations.stylesheets set to true, and other items in userChrome.css are working. I am using 121.0 at home and 115.0 ESR at work and see the same (i.e. no "Close Tab"), in both cases on Debian testing. I do see this menu item when using the keyboard to open the File menu. Any idea why this no longer works? thank you, Greg