Hey there! Please see https://support.mozilla.org/en-US/questions/1342447 for how to remove the double spacing. Hope I helped! Kind regards, Bithiah

menupopup > menuitem, menupopup > menu {
padding-top: 2px !important; padding-bottom: 2px !important; /*adjust*/
min-height: 22px !important; /*adjust or use unset*/
}

*|*:root {--arrowpanel-menuitem-padding: 2px 8px !important;} /*adjust 2px value*/

You can add a min-height rule in addition to reducing the padding. You can use code in userChrome.css to modify the menu spacing. *https://www.userchrome.org/firefox-89-styling-proton-ui.html#menuspacing Add CSS code to the <b>userChrome.css</b> file. <hr> <pre><nowiki> menupopup > menuitem, menupopup > menu { padding-top: 2px !important; padding-bottom: 2px !important; /*adjust*/ min-height: 22px !important; /*adjust or use unset*/ } *|*:root {--arrowpanel-menuitem-padding: 2px 8px !important;} /*adjust 2px value*/ </nowiki></pre> <hr> *https://www.userchrome.org/what-is-userchrome-css.html *https://www.userchrome.org/how-create-userchrome-css.html In Firefox 69 and later you need to set this pref to true on the <b>about:config</b> page to enable userChrome.css and userContent.css in the chrome folder. *toolkit.legacyUserProfileCustomizations.stylesheets = true *https://www.userchrome.org/firefox-changes-userchrome-css.html