Index: src/wp-admin/css/nav-menus.css
===================================================================
--- src/wp-admin/css/nav-menus.css	(revision 49715)
+++ src/wp-admin/css/nav-menus.css	(working copy)
@@ -859,6 +859,7 @@
 
 	.menu-settings-group {
 		padding-left: 0;
+		overflow: visible;
 	}
 
 	.menu-settings-group-name {
@@ -881,6 +882,10 @@
 		margin: 0.5em 0;
 	}
 
+	.wp-core-ui .manage-menus .button {
+		margin-bottom: 0;
+	}
+
 	.widefat .menu-locations .menu-location-title {
 		padding-top: 16px;
 	}