Ticket #24179: 24179.2.patch

wp-admin/js/post-formats.js

@@ -67 +67 @@
                 $('.post-format-change a').click(function() {
                         $('.post-formats-fields, .post-format-change').slideUp();
                         $('.post-format-options').slideDown();
+                        switchFormatClass('standard');
                         return false;
                 });