UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.117 Safari/537.36

Steps to reproduce the problem:
1. Open a swf in cefclient
2. try to print using a FlexPrintJob or PrintJob

job.start() return false

<?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"  minWidth="955" minHeight="600">
	<fx:Script>
		<![CDATA[
			import mx.printing.*;

			// Create a PrintJob instance.
			private function doPrint():void {
				// Create an instance of the FlexPrintJob class.
				var printJob:FlexPrintJob = new FlexPrintJob();

				// Start the print job.
				if (printJob.start() != true) return;

				// Add the object to print. Do not scale it.
				printJob.addObject(myDataGrid, FlexPrintJobScaleType.NONE);

				// Send the job to the printer.
				printJob.send();
			}
		]]>
	</fx:Script>

	<mx:VBox id="myVBox">
		<mx:DataGrid id="myDataGrid" width="300">
			<mx:dataProvider>
				<fx:Object Product="Flash" Code="1000"/>
				<fx:Object Product="Flex" Code="2000"/>
				<fx:Object Product="ColdFusion" Code="3000"/>
				<fx:Object Product="JRun" Code="4000"/>
			</mx:dataProvider>
		</mx:DataGrid>
		<mx:Button id="myButton" 
				   label="Print" 
				   click="doPrint();"/>
	</mx:VBox>
</s:Application>

What is the expected behavior?
he print dialog should launch, leading to being able to print from our flash application

What went wrong?
Nothing happen. The print dialog does not launch.

Did this work before? No 

Chrome version: 66.0.3359.117  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 29.0 r0

It works in Chrome but not in CEFClient or any others binary using CEF3
 

Deleted: testPrintJob.swf 926 KB

testPrintJob.swf 926 KB Download