diff --git a/wp-content/themes/twentyfifteen/header.php b/wp-content/themes/twentyfifteen/header.php
index dd5ec01eeb..11671321fb 100644
--- a/wp-content/themes/twentyfifteen/header.php
+++ b/wp-content/themes/twentyfifteen/header.php
@@ -12,7 +12,7 @@
 <html <?php language_attributes(); ?> class="no-js">
 <head>
 	<meta charset="<?php bloginfo( 'charset' ); ?>">
-	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<meta name="viewport" content="width=device-width">
 	<link rel="profile" href="http://gmpg.org/xfn/11">
 	<link rel="pingback" href="<?php bloginfo( 'pingback_url' ); ?>">
 	<!--[if lt IE 9]>
diff --git a/wp-content/themes/twentyfifteen/style.css b/wp-content/themes/twentyfifteen/style.css
index e51ff5a49d..b626d4b489 100644
--- a/wp-content/themes/twentyfifteen/style.css
+++ b/wp-content/themes/twentyfifteen/style.css
@@ -3918,18 +3918,6 @@ span > video {
  */
 
 @media screen and (min-width: 59.6875em) {
-	body:before,
-	.sidebar-fixed .site-header,
-	.sidebar-fixed .main-navigation,
-	.sidebar-fixed .social-navigation,
-	.sidebar-fixed .widget {
-		-webkit-transform: translateZ(0); /* Fixes flashing bug with scrolling on iOS Safari */
-	}
-
-	.sidebar-fixed .sidebar {
-		position: fixed;
-	}
-
 	body:before {
 		background-color: #fff;
 		box-shadow: 0 0 1px rgba(0, 0, 0, 0.15);
@@ -3941,6 +3929,7 @@ span > video {
 		top: 0;
 		left: 0;
 		width: 29.4118%;
+		z-index: 0; /* Fixes flashing bug with scrolling on Safari */
 	}
 
 	.site {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 00df1d1bad..47eee8e21c 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-beta2-30564';
+$wp_version = '4.1-beta2-30565';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
