Editor, DFW v2: use a 2D transform to force repaint of the admin toolbar, only on #wp-toolbar. Fixes calculating the position of the right sidebar on fade-in and removes any performance and stacking implications.

Props joemcgill, see #30516.

git-svn-id: https://develop.svn.wordpress.org/trunk@30710 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/edit.css

@@ -1283,7 +1283,10 @@ table.links-table {
 	transition-property: opacity;
 	-webkit-transition-timing-function: ease-in-out;
 	transition-timing-function: ease-in-out;
-	transform: translateZ(0);
+}
+
+.focus-off #wp-toolbar {
+	-webkit-transform: translate(0, 0);
 }
 
 .focus-on #adminmenuback,