Apply a no-op CSS transformation to the admin toolbar (among other elements) in order to trigger hardware acceleration when focus/DFW deactivates. This helps prevent rendering issues seen in browsers on Retina devices.

See #30516
Props joemcgill


git-svn-id: https://develop.svn.wordpress.org/trunk@30708 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/edit.css

@@ -1283,6 +1283,7 @@ table.links-table {
 	transition-property: opacity;
 	-webkit-transition-timing-function: ease-in-out;
 	transition-timing-function: ease-in-out;
+	transform: translateZ(0);
 }
 
 .focus-on #adminmenuback,