Ticket #23765: 23765.1.diff

wp-content/themes/twentythirteen/style.css

@@ -388 +388 @@
 input[type="search"] {
         -webkit-appearance: textfield;
         padding-right: 2px; /* Don't cut off the webkit search cancel button */
+        width: 270px;
 }
 
 input[type="search"]::-webkit-search-decoration {