Index: src/wp-admin/includes/template.php
===================================================================
--- src/wp-admin/includes/template.php	(revision 28886)
+++ src/wp-admin/includes/template.php	(working copy)
@@ -1992,7 +1992,7 @@
 
 		self::print_js( 'wp360_revisions', '.misc-pub-section.misc-pub-revisions', array(
 			'content' => $content,
-			'position' => array( 'edge' => is_rtl() ? 'left' : 'right', 'align' => 'center', 'my' => is_rtl() ? 'left' : 'right-14px' ),
+			'position' => array( 'edge' => is_rtl() ? 'left' : 'right', 'align' => 'center' ),
 		) );
 	}
 
@@ -2020,7 +2020,7 @@
 
 		if ( 'themes' === get_current_screen()->id ) {
 			$selector = '.theme.active .customize';
-			$position = array( 'edge' => is_rtl() ? 'right' : 'left', 'align' => 'center', 'my' => is_rtl() ? 'right-13px' : '' );
+			$position = array( 'edge' => is_rtl() ? 'right' : 'left', 'align' => 'center' );
 		} else {
 			$selector = 'a[href="customize.php"]';
 			if ( is_rtl() ) {
Index: src/wp-includes/css/wp-pointer.css
===================================================================
--- src/wp-includes/css/wp-pointer.css	(revision 28886)
+++ src/wp-includes/css/wp-pointer.css	(working copy)
@@ -106,6 +106,7 @@
 }
 
 .wp-pointer-bottom {
+	margin-top: -13px;
 	padding-bottom: 13px;
 }
 
@@ -115,6 +116,7 @@
 }
 /* @noflip */
 .wp-pointer-right {
+	margin-left: -13px;
 	padding-right: 13px;
 }
 
@@ -139,10 +141,11 @@
 	border-bottom-color: #3592b6;
 }
 
-.wp-pointer-top .wp-pointer-arrow:before,
-.wp-pointer-undefined .wp-pointer-arrow:before {
+.wp-pointer-top .wp-pointer-arrow-inner,
+.wp-pointer-undefined .wp-pointer-arrow-inner {
+	top: 1px;
 	margin-left: -13px;
-	margin-top: -11px;
+	margin-top: -13px;
 	border: 13px solid transparent;
 	border-bottom-color: #2ea2cc;
 	display: block;
@@ -155,9 +158,10 @@
 	border-top-color: #ccc;
 }
 
-.wp-pointer-bottom .wp-pointer-arrow:before {
+.wp-pointer-bottom .wp-pointer-arrow-inner {
+	bottom: 1px;
 	margin-left: -13px;
-	margin-top: -14px;
+	margin-bottom: -13px;
 	border: 13px solid transparent;
 	border-top-color: #fff;
 	display: block;
@@ -171,8 +175,10 @@
 	border-right-color: #ccc;
 }
 
-.wp-pointer-left .wp-pointer-arrow:before {
-	margin-left: -14px;
+/* @noflip */
+.wp-pointer-left .wp-pointer-arrow-inner {
+	left: 1px;
+	margin-left: -13px;
 	margin-top: -13px;
 	border: 13px solid transparent;
 	border-right-color: #fff;
@@ -182,13 +188,15 @@
 
 /* @noflip */
 .wp-pointer-right .wp-pointer-arrow {
-	right:0;
+	right: 0;
 	border-width: 13px 0 13px 13px;
 	border-left-color: #ccc;
 }
 
-.wp-pointer-right .wp-pointer-arrow:before {
-	margin-left: -14px;
+/* @noflip */
+.wp-pointer-right .wp-pointer-arrow-inner {
+	right: 1px;
+	margin-right: -13px;
 	margin-top: -13px;
 	border: 13px solid transparent;
 	border-left-color: #fff;
@@ -196,12 +204,6 @@
 	content: ' ';
 }
 
-.rtl .wp-pointer-arrow:before {
-	-webkit-transform: rotateY(180deg);
-	-ms-transform:     rotateY(180deg);
-	transform:         rotateY(180deg);
-}
-
 /* Disable pointers at responsive sizes */
 @media screen and ( max-width: 782px ) {
 	.wp-pointer {