Index: src/wp-includes/css/editor.css
===================================================================
--- src/wp-includes/css/editor.css	(revision 30810)
+++ src/wp-includes/css/editor.css	(working copy)
@@ -158,15 +158,13 @@
 	border: 1px solid #aaa;
 	-webkit-border-radius: 2px;
 	border-radius: 2px;
-	-webkit-box-shadow: 0 1px 4px rgba( 0, 0, 0, 0.2 );
-	box-shadow: 0 1px 4px rgba( 0, 0, 0, 0.2 );
+	-webkit-box-shadow: 0 1px 4px rgba( 0, 0, 0, 0.15 );
+	box-shadow: 0 1px 4px rgba( 0, 0, 0, 0.15 );
 	-webkit-box-sizing: border-box;
 	-moz-box-sizing: border-box;
-	-webkit-box-sizing: border-box;
 	box-sizing: border-box;
 	margin-bottom: 8px;
 	position: absolute;
-	opacity: 0;
 	-moz-user-select: none;
 	-webkit-user-select: none;
 	-ms-user-select: none;
@@ -183,18 +181,6 @@
 	margin-top: 8px;
 }
 
-div.mce-inline-toolbar-grp.mce-inline-toolbar-grp-active {
-	-webkit-transition:
-		top 0.1s ease-out,
-		left 0.1s ease-out,
-		opacity 0.1s ease-in-out;
-	transition:
-		top 0.1s ease-out,
-		left 0.1s ease-out,
-		opacity 0.1s ease-in-out;
-	opacity: 1;
-}
-
 div.mce-inline-toolbar-grp:before,
 div.mce-inline-toolbar-grp:after {
 	position: absolute;