Index: src/wp-includes/css/admin-bar.css
===================================================================
--- src/wp-includes/css/admin-bar.css	(revision 51064)
+++ src/wp-includes/css/admin-bar.css	(working copy)
@@ -1029,10 +1029,18 @@
 
 /* Smartphone */
 @media screen and (max-width: 600px) {
+	body:not(.wp-admin) {
+		position: relative;
+	}
+
 	#wpadminbar {
 		position: absolute;
 	}
 
+	body:not(.wp-admin) #wpadminbar {
+		top: -46px;
+	}
+
 	#wp-responsive-overlay {
 		position: fixed;
 		top: 0;