Ticket #27569: 27569.patch

src/wp-includes/css/editor.css

@@ -1445 +1445 @@
 }
 
 .wp-fullscreen-wrap .wp-editor-container,
+.wp-fullscreen-title,
 #wp-fullscreen-central-toolbar {
-        max-width: 100%;
+        -webkit-box-sizing: border-box;
+        -moz-box-sizing: border-box;
+        box-sizing: border-box;
+        max-width: 100%!important;
 }
 
 .wp-fullscreen-active .wp-editor-tools,