--- a/browser/themes/shared/customizableui/panelUI.inc.css
+++ b/browser/themes/shared/customizableui/panelUI.inc.css
@@ -1078,16 +1078,20 @@ menuitem.panel-subview-footer@menuStateA
   font: menu;
   font-weight: normal;
 }
 
 #BMB_bookmarksPopup .subviewbutton:not([disabled="true"]) {
   color: inherit;
 }
 
+#BMB_bookmarksPopup .subviewbutton > .menu-iconic-left {
+  margin-inline-end: 3px;
+}
+
 #BMB_bookmarksPopup .panel-arrowcontainer > .panel-arrowcontent > .popup-internal-box > .autorepeatbutton-up,
 #BMB_bookmarksPopup .panel-arrowcontainer > .panel-arrowcontent > .popup-internal-box > .autorepeatbutton-down {
   -moz-appearance: none;
   margin-top: 0;
   margin-bottom: 0;
 }
 
 /* Remove padding on xul:arrowscrollbox to avoid extra padding on footer */