update

src/other/firefox/WhiteSur/parts/buttons-fixes.css

@@ -183,6 +183,10 @@ button.close.ghost-button:active {
 	margin: 4px 4px 0 4px !important;
 }
 
+#context-navigation > .menuitem-iconic > .menu-iconic-left > .menu-iconic-icon {
+	margin: 3px !important;
+}
+
 /* Bookmarks editor buttons */
 .expander-down image, .expander-up image {
 	margin: 6px !important;

src/other/firefox/WhiteSur/parts/icons.css

@@ -4,9 +4,9 @@
 
 /* Cursors autoscroller fix */
 .autoscroller {
-  --panel-background: transparent !important;
-  --panel-border-color: transparent !important;
-  background-image: url("chrome://global/skin/icons/autoscroll.svg") !important;
+	--panel-background: transparent !important;
+	--panel-border-color: transparent !important;
+	background-image: url("chrome://global/skin/icons/autoscroll.svg") !important;
 }
 
 /* Built-in firefox icons color */

src/other/firefox/WhiteSur/parts/popups-contents.css

@@ -66,8 +66,11 @@
 /* All tabs popover */
 .all-tabs-item[selected] {
 	box-shadow: none !important;
-	border-left: 3px solid var(--gnome-tabbar-tab-active-border-bottom-color);
 	border-radius: 0 !important;
+	background: url("../icons/bullet-symbolic.svg") !important;
+	background-position: left center;
+	background-size: 14px 14px;
+	background-repeat: no-repeat;
 }
 
 .all-tabs-item:hover,

src/other/firefox/WhiteSur/parts/tabsbar.css

@@ -14,11 +14,12 @@
 #tabbrowser-tabs,
 #tabbrowser-tabs arrowscrollbox {
 	min-height: 0 !important;
-	--tab-min-height: 32px !important;
+	max-height: 32px !important;
+	--tab-min-height: 0 !important;
 }
 
 .tab-background, .tab-stack {
-	min-height: 32px !important;
+	min-height: 0 !important;
 }
 
 /* Extra margin for the first and last tabs */
@@ -318,6 +319,17 @@ tab[selected]:-moz-window-inactive {
 	padding: 0 !important;
 }
 
+#TabsToolbar .toolbarbutton-1 > .toolbarbutton-icon,
+#TabsToolbar .toolbarbutton-1 > .toolbarbutton-text,
+#TabsToolbar .toolbarbutton-1 > .toolbarbutton-badge-stack {
+	padding: 8px !important;
+}
+
+#TabsToolbar .toolbarbutton-1 > .toolbarbutton-icon {
+	width: 32px !important;
+	height: 32px !important;
+}
+
 /* firefox-view-button */
 :root:not([privatebrowsingmode="temporary"]):not([firefoxviewhidden]) :is(#firefox-view-button, #wrapper-firefox-view-button) + #tabbrowser-tabs {
 	border-inline-start: 1px solid var(--gnome-toolbar-border-color) !important;