Hi, CCed to you just in case it doesn’t show up on the list as it tends to reject email with images.
What it should look like: What 4.16.1 gives: There are other similar issues cause by the same issue as well. Code to replicate: <?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <s:layout> <s:VerticalLayout /> </s:layout> <fx:Declarations> <mx:DateValidator id="dv" inputFormat="YYYY-MM-DD" property="text" source="{df}" /> </fx:Declarations> <mx:DateField id="df" formatString="YYYY-MM-DD"/> <mx:Label text="{df.selectedDate.toString()}" /> <mx:Button label="Validate" click="dv.validate();"/> </s:Application> You need to compile with the right locale i.e. try a not english one. Thanks, Justin